<prompt> Human: Hello all,Im curious what this subs opinion of investments in cryptocurrency is. I have a friend that is a complete evangelist on the subject - 100 of his investments are in cryptocurrencies, he believes that index funds are worthless, etc. Obviously these are highly speculative investments, but do any of you have investments in cryptocurrency? If so, what portion of your portfolio is comprised of them? What currencies are you invested in?  <response>: 100 of his investments are in cryptocurrencies, he believes that index funds are worthless, etc.That is just stupid. Cryptocurrencies are speculations, not investments. no more than 10 of your total portfolio should be used in speculation. 