If I have to go to work, I wear boxers. If it's my day off, either boxers or boxer briefs, just whatever I feel like that day. Usually sleep commando if not completely naked.
Last time I counted how many pieces of underwear I owned, it was over 150-- and all of it women's underwear, except for some that were women's bottom-half bikinis. I haven't worn men's underwear actively in well over a decade now. Thongs, bikinis, boyshorts, full briefs, I have some of everything.