Bottom line is that if certain spellcasters want to, they can dish as much damage as a fighter and switch tactics later if they want. Sans feats, a fighter can serve as muscle to keep the artillery safely firing away.
(I also note, though some may overlook the point, that the fighter is often stronger and better able to shove, grapple and NOT be shoved grappled or moved with training in athletics. Holding a bridge can make this clear, but I digress).
Yes, I am fine with doing similar damage while being more resistant with better AC, HPs, physical strength and so forth. If you don't want to swing a sword and grapple orcs, a spellcaster may be more your speed. Let's not pretend this is not an important function! It is not without flavor or RP possibilities! You are not and effete sideliner!