You are indeed not alone. I very rarely socialize with men of my own age. They generaly are roughly a decade apart either older or younger. Men my age seem to put me on edge and I feel like I'm singled out as the weird one, regardless of how esoteric my companions are. I'm fairly sure they don't pick up on it as like you i'm articulate can hold my own in conversation and am occasionally pretty damned funny, but on the inside i just feel like vomitting. Perhaps its the pecking order most men feel the need to place them selves in that makes me feel more comfortable I wouldnt be competing for women more than 10 years in age difference. Hell i dont know why i don't feel comfortable around men my age, just that I hear ya on this one.
I will never ALWAYS be right, I wasn't wrong, I am whats left.