@simon - a man persuaded against his will is of the same opinion still - Dale Carnegie I believe.
I agree with you - there probably are a lot of shysters attracted to BTC for all the wrong reasons. We treat that as background noise in much the same way as the Internet was all porn and gambling and Nigerian scams in the early days - or remember how spam was going to kill email? Bad actors and problems will always exist - the trick is to separate the noise from the signal.
BTC is more pseudonymous than anonymous. KYC and AML and other compliance is essential.
BTC will achieve the value people ascribe to it, same as fiat does today. Lets check back in 5 years as neither your or I or anyone else really knows how this is going to play out. My sense is that digital currency is here to stay.