I'm not too concerned with high level, optimized Gish characters; I never see them. I bet they are less than .1% of characters. You play a very different game than most. That is not a criticism, but an observation.
I am not concerned either. I see a lot of them actually (some played by me) but I love the fiction and have no problem with the "martial-caster divide".
A lot of people on this board have stated that martials (and Fighters in specifically) need to be the best at melee and they are not happy with "carrying the Wizard's spellbooks".