He's got no backbone, wines a lot, and remains immature throughout the seasons. Even in his old age the only progression he seemed to make was that he was more patient. He is just a sheltered shallow person, easily as narcissistic as the other main characters, just with lower self esteem.

He's a good wingman though. I'll give him that.

But I respect your opinion. I blame the writers. They did him a lot of injustices.