system
A chat on subreddit /r/me_irl
human
Menswear has historically been designed to avoiding showing up one’s date. In addition men’s formal suiting has borrowed many cues from military formal dress which by design inhibits individual expression in favor of group cohesion. Not saying that’s how things should stay, but that’s why. 

For me, there’s a chivalrous appeal to dressing in a quietly confident way that visually defers to my better half and allows her to feel like a queen. But sometimes I like a statement piece, too! Depends on the occasion.
gpt
In addition to this, formal menswear used to be a lot more ornate, and at various times there were strictly enforced class-based rules about dress. Menswear became more subdued in response to Oscar Wilde’s highly publicized indecency trial. The prosecution frequently referred to Wilde’s fashion choices to infer his sexual orientation, and substantiate their claims. This causes worry among men at the time who didn’t want their wardrobes used against them. This anxiety pushed menswear in a decidedly conservative direction.