Both my husband and I own/ride motorbikes. Noisy ones, but not Harleys...
I would never consider revvign my bike at 4am in the morning!!!!
My husband does sometimes when he comes home from a ride, mainly to let me know (if I stay home) that he is coming and to open the shed. Mind you, this is all in the afternoon during daylight and not at some ungodly hour.
Heck I love the loud sound, but I am considerate enough to only rev when Im out in the open space. Not near any houses.. (Under a bridge or through tunnels are brilliant!!)