They also keep the pad in position; shorts can shift forward so your butt is no longer on the pad. Plus, they keep your privates in place. I will only wear bibless shorts when the ride is short. Key is finding the 'chamois' that is right for you. Compression in the legs is, for me, also desirable.

I take off my jersey, slip out of the 'suspenders', and pull then down to pee. You get used to it.