I can wear a dress to work and nobody criticizes me. I’d be really sad if I had to wear pants all the time, they’re just not as comfortable. Let’s normalize pretty dresses for dudes!
Mainstream clothes for sure, but I feel the same way about mainstream women’s clothes. Waist high jeans, an inoffensively colored top and a vest or blazer. Switch out the jeans for beige linen pants in the summer. Yawn. If you want inspiration for some more interesting clothes in general but men in particular, you gotta look to non-mainstream subcultures. Especially ones that don’t give shit about gender. I hung out with hippies for years and men and women alike are dressed in cool, colorful and interesting clothes. Both genders wear pants, dresses, and skirts. It heavily inspired my style and believe me, I stand out a lot among other women. If you want more variety you have got to look further than what’s mainstream. Because that’ll always trend towards boring and basic.
Even mainstream clothes are better in the woman’s section. I was in Peacocks (fairly small cheap clothes shop - you can see most of what they’ve got by standing near the centre) and you can just tell where the men’s clothes are by the sea of dull, boring shades with not a single thing showing any sign of colour at all, like the brightness is turned down to 1 on the telly. The style differences are minimal. Even the material is just awful scratchy fabric for the most part. Look over to the woman’s section and it’s a sea of colour, many more different styles (not that many, as I said, this is a small cheap shop), and if you touch anything it’s instantly noticeable that the material is much better quality, softer. I don’t get woman who wear men’s clothes - why would you put yourself through that?
There is more variety for sure, but my point kinda was that most people, men and women, don’t really make full use of the variety there is. Almost everyone dresses kinda dull. Women have easier access to special and colorful clothes than men (although the latter can definitely find some if they look for it) and they do use it a slightly more but actually interesting clothing takes a little willingness to stand out that most people simply do not have. Maybe it’s different in other countries though - where I live conformity and not standing out is woven into every aspect of our culture.