The only ostensible difference between crypto-currencies is in their code and network strength (people and computing power). By value cash, and namely US $100

The only ostensible difference between crypto-currencies is in their code and network strength (people and computing power). By value cash, and namely US $100 bills, are used for more crimes than anything else in the world, ever. Don't do anything illegal with your bitcoin and you should be fine. Don't worry about what other people do, that's an endless and naive vortex of insanity. Basically mind your own business unless someone asks you a question.