What do you think really ruined Yahoo Q&A?

I've been on here since this started, I've had questions removed, my account suspended and even terminated. Biggest reason is that trolls would be tactful while posting questions and answers. Obvious attacks, such as passive aggression, but not direct enough to have their questions removed. All the while reporting genuine questions for spelling errors, rant, chat or anything what they could get away with.

I have known a lot of people who regularly used this site when it began, and all left with the same complaint, they were tired of having their questions taken down. It wasn't fun anymore and felt like their rights to speak were taken. It's like those managing the site were so obvious to the real problems. When I came back to the site after several years, trolls had taken over, and the other big problem was the poor redesign of the site. The first design that was green and far more appealing. The second design was, well what design. Just boring 

What is your opinion?