You never know what happens in the future. Even in different advertising networks, social media, traffic exchanges, and get paid to websites bitcoin is being advertised like something which is creating new millionaires everyday out of ordinary people that is why many people opt to hold their bitcoin.
Correct because someday if bitcoin value would increase value more they or we will be rich for our investment. Also it depends on the users we have an options to hold or not if you believed in bitcoin i think you will hold your bitcoin for long term but if you is a negative thinker i think you will not be bemefited of bitcoin.