<prompt> Human: My roommate has a serious gambling problem. Somebody told him about the new cryptocurrency Ripple and he thinks its a guaranteed million dollar plan. Hes saying if I invested 100 bucks into Bitcoin 10 years ago Id be a total millionaire. I have a lot of serious doubts investing into a cryptocurrency. I saw a thread here recently that really frowned upon it but couldnt figure out why. I am extremely suspicious because Ive never heard of any get rich quick scheme working. Is this new Ripple cryptocurrency viable or is it all a scam?  <response>: All cryptocurrency is speculation. Its easy to say IF - if you had put 100 into dogecoin five years ago youd have 0 now.I think that most of the new cryptocurrency thats popping up are all cash grabs. Like penny stocks, they will push them hard and get people to buy in, then sell to all the suckers and the price will plummet. Dont invest any money you arent comfortable with losing. 