It will never die. I believe it will wax and wane over the years. Being incredibly anonymous and deregulated means it will always be a great place for the evil doers to manipulate the market and make money off of it. Because of that there will always be some people using it.
I think one of the biggest failings of cryptocurrency in general is that people view it as a replacement for cash or debit cards when in reality with how slow and expensive the transactions are it is more of a replacement for clearing houses. When you get money sent to your bank you can use it right away because the bank trusts you and provides that service but the money isn't truly there yet. You may have heard the phrase of "the check cleared" or something similar. It takes a long time for those processes to complete and crypto is faster than it.