What state is DotA2 at?
It's something I intend to dip my toe into but if it's still in the beta stage where it's all the veterans playing I don't want to start experimenting yet.
At the moment I would say most of the community is still somewhat veteran - A lot of the people have come from dota1 or HoN, meaning they will berate you on your first game because you dont know how to build someone, with the justification "ITS JUST LIKE HON IDIOT".
I've lately taken to not playing any moba without a significant group of people (3+ in a queue), partly because of this, and partly because I really like my league team, and am too lazy to learn how to play soloq again.
edit
in retrospect, this seems to be an entirely negative comment recommending you avoid dota.. I mean, if you are interested in the genre, its a good game worth trying. It has decent enough matchmaking, which I assume can only get better as more people start playing. I find it fun to mess around in with friends, doing silly things (did a KOTL/zeus lane the other day, was pretty hilarious)