I think it's depend on individual, coz I wnet out woth one guy and he's in his late 50s already...yeah yeah...he was as old as my dad....don't ask why I went out with him coz it's a long story....my bad..ieie.... but I can tell you that he was still hot in bed and alot better than some younger guys I've been with. I think it isn't your sex drive that lost, it's more like your interest in sex that faded once you get older.