Investing few dozens of dollars decades ago would be right thing and now one may only laughing. But than I personally did not even heard of Bitcoins. Investing few thousands 5 years back also would be right thing though we did not know for sure. Now it became way too risky - one need to invest few dozens of thousands because percentage-wise there is very little if any room to grow. And remember that Bitcoin is nothing, just zeroes and ones, it not supported by anything except of faith and all those billions of capitalization are someone's money and many of them lost forever for their previous owners. With Bitcoins it is very clear that all those gains of some is lost for someone else. It is a pyramid and it can collapse anytime. I do believe that starting from today people still can make a fortune on crypto, just remember it is not "investment", but rather sheer gambling. Happy to gamble on your house? Go ahead!