Whoah hold on! I do understand your point but concluding that EVERYONE who uses a bitcoinmixer equates to being a criminal or at least someone involved in criminal activities is just wrong in so many levels. You cannot live in a black-and-white world where there are only two (2) options for you.

Bitcoinmixers are created in order to conceal transactions when you send them to one address to another. While it may be true that it can be an avenue for illegal activities, it was also created for privacy and security.