Forget Bitcoin! I’d buy-and-hold the best UK shares in a Stocks & Shares ISA to make a million Click here to claim your copy now — and we’ll tell you the name of this Top US Share… free of charge! Image source: Getty Images. Simply click below to discover how you can take advantage of this. See all posts by Matthew Dumigan Our 6 ‘Best Buys Now’ Shares Matthew Dumigan | Saturday, 4th July, 2020 Matthew Dumigan has no position in any of the shares mentioned. The Motley Fool UK owns shares of and has recommended GlaxoSmithKline and Unilever. The Motley Fool UK has recommended Tesco. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors. Unsurprisingly, the March stock market sell-off triggered a mass exodus from equities to alternative assets such as gold and Bitcoin. As market sentiment rapidly deteriorated, investors became spooked by volatile share prices and economic uncertainty. Nevertheless, I think investing in the best UK shares available on the market today still remains a superior way of building capital.The problem with BitcoinThe price of Bitcoin surged in the wake of the market crash. In fact, the virtual currency has vastly outperformed many stock market indexes around the world. What’s more, this could feasibly continue in the short term. Global equities look set to continue to grapple with the implications of the wider macroeconomic uncertainty.5G is here – and shares of this ‘sleeping giant’ could be a great way for you to potentially profit!According to one leading industry firm, the 5G boom could create a global industry worth US$12.3 TRILLION out of thin air…And if you click here we’ll show you something that could be key to unlocking 5G’s full potential…However, let’s not forget that the price of Bitcoin plunged in tandem with UK shares in early March. From mid-February to mid-March, the cryptocurrency shed around 50% of its value. What’s more, wild downswings like this are not a rare occurrence for Bitcoin investors. Simply observing the virtual currency’s price chart tells you everything you need to know.On top of this, I’m not convinced that Bitcoin’s future prospects are the brightest. After 11 years in circulation, the cryptocurrency is still not widely used or accepted. It seems that for now and the foreseeable future, its valuation must continue to be derived from sheer investor speculation.Don’t get me wrong, I’m not ruling out a small allocation to Bitcoin in a diversified investment portfolio. Rather, I believe that buying a handful of the best UK shares is a superior way to build wealth. Especially over the long term.A better alternative: Buying the best UK sharesThe buy-and-hold investment strategy is a tried and tested way of building capital. Just look at the success of investing titans such as Warren Buffett, who have utilised this approach throughout their time in the market.Here at The Motley Fool, we echo the words of Buffett in that “our favourite stock holding period is forever”. In other words, the longer you hold your investments for, the larger you can expect your gains to be. This is thanks to the wonders of compound returns, which is the snowballing effect that turns a relatively small investment into a huge sum over time. Given the average annual return of the FTSE 100 is around 8%, you have the potential to realise some pretty serious gains.In my view, the best way to implement this strategy is by selecting a handful of the best UK shares that you’d be comfortable holding forever. For me, that means taking a closer look at companies such as Unilever, GlaxoSmithKline, and Tesco. All three of these companies have well-established market positions, stable earnings growth, and boast healthy dividend yields.Alternatively, you may think the best investment for you would be to gain exposure to a larger amount of UK shares. If so, I recommend taking a look at a cheap UK tracker fund, such as the Vanguard FTSE UK All Share Index.Whichever you choose, investing in equities and holding them for the long term is a far safer and superior way to build capital in my eyes. As such, I’d ensure that buying some of the best UK shares remains the top priority when it comes to growing a bulky Stocks and Shares ISA. Renowned stock-picker Mark Rogers and his analyst team at The Motley Fool UK have named 6 shares that they believe UK investors should consider buying NOW.So if you’re looking for more stock ideas to try and best position your portfolio today, then it might be a good day for you. Because we’re offering a full 33% off your first year of membership to our flagship share-tipping service, backed by our ‘no quibbles’ 30-day subscription fee refund guarantee. Enter Your Email Address I’m sure you’ll agree that’s quite the statement from Motley Fool Co-Founder Tom Gardner.But since our US analyst team first recommended shares in this unique tech stock back in 2016, the value has soared.What’s more, we firmly believe there’s still plenty of upside in its future. In fact, even throughout the current coronavirus crisis, its performance has been beating Wall St expectations.And right now, we’re giving you a chance to discover exactly what has got our analysts all fired up about this niche industry phenomenon, in our FREE special report, A Top US Share From The Motley Fool. “This Stock Could Be Like Buying Amazon in 1997” I would like to receive emails from you about product information and offers from The Fool and its business partners. Each of these emails will provide a link to unsubscribe from future emails. More information about how The Fool collects, stores, and handles personal data is available in its Privacy Statement.