Druids can offtank in raids with bear...
For sure, our OT is a bear. I just mean that coming into the game this late, you're going to have a pretty hard time finding a guild where you can do that, or even convince PUGs to take you on.
... and are pretty good healers, we have a resto druid that always ends up in the top healers in the raids. Just have to play it properly.
It's not that they're inherently bad, it's that they're absolutely the worst of the 4 if you're up against other people who can play properly. Hence there's generally 1-2 per raid and shitloads of the others.