When you hit max level you'll find that those little seconds of twiddling your thumbs shouldn't be as bad as they are now give it till 45? I think is when you should start getting more a rhythm and less thumb twiddling but haven't touched my summoner for a while I might be wrong so give it till level 50.

Raiding isn't too bad not really versed in it enough to tell you everything you would want know about it most likely though, the primal fights are good though even if they are easier now they could still kill you at 50 in ilvl130 with a bad group.

I play for friends, I craft for friends, I tank for friends. I play for other people mostly and it gives me a never ending laundry list of things I can be doing or working towards to help other people out. You could play just to raid but you will hit that farming phase and you will probably get bored until the next raid patch. Relic weapons were a decent distraction for some people but it is a grind so might not be your cup of tea. You'll have to see what this new relic chain brings and make up your own mind on that one.