Because only by investing in altcoins or ICOs your investment can become x100 in a week, besides that not all of us here make investments for financial reasons, many of us invest in technologies that interest us or that we believe will provide a solution to an important problem that is affecting us daily, of course, it is also excellent when you see your portfolio grow and recover your investment with profits.
Agree, only with crypto investment is the best and fastest solution for profit, stocks need at least 10 years to get 100% profit, gold takes longer, crypto is a fast investment to get hundreds or even thousands of percent profit in a year or even less.