I've shagged all sorts, even had a viscount as it happens. All in the name of science of course. It's not difficult to make a woman come all night, you just need the technical knowledge and some control. Most women can come like this, but don't know they can. When a woman is used to continuous multiple orgasms until she is exhausted, it's difficult to feel satisfied with something less, no matter how nice the guy is. Even if you encourage him or coach him, if he's not physically able to do it, there is not a lot you can do. Also, there are usually lots of things a sexually content woman will do for a man by the way, incase you think it's all one sided!