This issue is in every MMO of it's type. The answer is, if you don't feel you are good enough to move out of the fire and such, then maybe you should play a class more suited to your abilities.
I know it sounds harsh, but it is in fact the truth.
Also, in terms of group make up for bosses and such, it's best to be able to have some flexibility in your raid groups.
I missed the part where the OP felt they weren't good enough to avoid things.
Flexibility is always a good thing, the problem comes when there's little to no downside when stacking ranged. I've always loved melee, always excelled and competed at the very top, but continually find myself with less reason to justify the frustration. MMO developers really need to get a grip on this.