Diversification is a crucial part of investing. It helps to reduce risk and may provide a more stable path to growth for an investor. As such, the idea of investing in a wide range of assets, including Bitcoin and buy-to-let, may be tempting. After the former’s fall and the apparent unpopularity of the latter, some investors may feel that they offer appealing risk/reward ratios. However, investing in shares through a stocks and shares ISA could prove to be a better move, in my opinion.