Yes. The community has completely ruined it.
Before? It was a good game, but that was because the community were normal and mature people. Now that it became so popular it is just infested with squeaky kids.
Depends on what types of games you like to play. Minecraft is a pretty good sandbox game, but I'm not a huge fan of sandbox games, and I usually prefer something with a bit more story or involvement. But if you just want to explore and build things it's pretty good for than.
Everybody has their own opinions. Some don't make any sense, others are completely right.
I think minecraft is great because the possibilities are endless as long as you have an imagination. Not to mention you can add anything to it with mods and or resource packs.
I find it great fun as long as you have something to do.