I know bitcoin has great potentials and I also know that there are some bad user of bitcoin like any other currency. But my point is, those bad users are a lot in number. I have seen thousands of posts and comments regarding uses of bitcoin in porn and gambling. You can find it in this forum with minimum effort too. And as bitcoin is not globally adopted, those users really play great impact on impression of btc, I guess majority of usage people get from bitcoin is only as an investment and for trading. then the second place is for payment and third with close rank is gambling. the rest are a relatively small in percentage.
The main reason behind the creation of Bitcoin was to provide millionaire with the facility of transacting large amount of money into any part of world at cheap rates within few seconds. Bitcoin has given what it was created for but with time it started to gain popularity and everyone wanted to have Bitcoin. Its price skyrocketed making it the best investment tool of the moment. Now everyone wants to have Bitcoin and it is the future of money.