Pee in a public restroom standing up without having to disrobe, squat and hover...

the convenience.
Have sex/jack off...always have been super curious about the male O and how it feels. Must be great considering some men are legit willing to stick it in anyone and any thing.
Uhhh that's pretty much it I guess. Nothing else I can think of that I could do as a man that I couldn't do as a woman.