Orgasming can be tiring so not great if you have other bookings and if it's someone you're really not feeling it with it then all that faking it gets tiresome.
I had one older guy who used to want to spend most of his hour getting me to cum time and time again, like I was some sort of bloody jackpot machine!.
That really wasn't giving me pleasure, I hated it, drove me nuts.
I don't mind a bit of oral on me but other than that I prefer to concentrate on pleasuring them.

I had someone like this, lovely feedback on AW but wanted to make me climax several times. This filled his booked time, then he'd take a long time getting dressed whilst chatting. Sometimes didn't move or tried to pull me back to bed when I got up at or after time 'What's the matter do you not want to have to let go?'. On his last visit he took offence when  I said (after time) we need to get moving, then on his way out he said "Heck it's way past time I'd better go". Yes had been the same for his previous bookings but it was apparently all about pleasing me. 

"you can stay as long as you want" when doing outcalls as if they are doing ME a favour by getting free sex!

Love these guys haha!