It's not that I wouldn't wear a suit/tux... I just don't own one.From guys who proclaim how they just will not wear a suit, much less a tuxedo, I just get this strong vibe of blue-collar classism, as though wearing something professional or formal makes them a socioeconomic sellout.
I did have a black suit last decade, but I only wore that to Olin Mills and funerals. I had one for graduation (a polyester affair that went out of style 10 minutes after I left the store). And looking at old family pictures from the late 50's and 60's I guess my mom always made sure I had something presentable for occasions.
Blue color classism, in my view would be a term that is a bit of a broad brushstroke.
Lot's of people don't own suits... at least I would think that would be the case.