Is it better for men to wear a wider waist or a narrower one?

It doesn't matter whether it is wide or narrow. But not too wide or too narrow. 3. 1 will do.

I think the style of men's wear should be simple and generous, and the quality should be good.

If the waist is thin, you can choose pants with a lower waist, so that the belt will not be tied directly to the waist, which visually shifts the center of gravity.