Haha, same(well, except the saltieness). Saw the thread title and though maybe the manga had ended, then realized the number wasn't high enough to be talking about the manga.

Anyway,

1. Ended at a chosen point. Because there just wasn't any manga left to animate to speak of.

2. There's tons of it. Too much to list. Check the list.

3. I still liked it, lots don't. But the ending kinda sucks. The manga had a perfect spot for them to stop, but then kept going for one more arc for some reason, and now it's stopped in an annoying place.