and if the so called math glitch really exsisted then epic 4e would have been unplaybel until phb2...witch we know was not the case.
You know, when we started play, the warlock missed every attack. Literally, he hit maybe one round out of four. And we were running standard, "by the book" encounters. He had a decent stat (17, I believe), and was doing everything he could. But a +3 to hit modifier at 1st level is brutal. Even if you're gunning against a non-AC defence (which is lower by 2 than AC, on average).
The warlord had the same problem. a +6 bonus, factoring in his weapon modifier, and he was still missing. Not a whole lot of fun.
Just because a game has a math glitch, it does not make it "unplaybel" (

).
I mean, look at RIFTS. That game is filled with glitches. People still buy it. Earthdawn had one with die codes (where, at some point in the game, your chance of success actually DROPPED slightly as you improved a skill).
There's also the fact that static bonuses such as expertise and paragon defences introduces an "Arms race" element to the game. If you want to compete with the rest of your companions, you need to "pay the tax".
And you better compete. If your group averages a certain to hit number, and a certain damage, you can bet any GM worth his salt is going to up the challenge to hit that party average. If you don't "pay the tax", you're essentially stuck missing a lot more than your companions. And let's be honest - there is an element of competition between players. Sure, you help each other out, and you feel good when Bob scores that critical hit. But nobody likes feeling they're slowing down the game, or not contributing enough to the team element. And if you're missing most of the time because your numbers aren't as high as everyone else's... that can make the game less fun.
These races become self-defeating: you spend a limited resource (feat slots) for a bonus to improve your hitting. The GM notices that monster defences are too low, so he throws in harder-to-hit monsters. You are now back to where you started, and you spent a feat to get there.