Like I've had enough one night stands in my life, where I don't get so much joy from seeing someone brand new and only once. At least for myself, I feel like the phase when you're first started dating someone, and you've only had sex once or twice, that's the most exciting part, because you're still exploring the chemistry.
Usually I'll see a provider until 1) she leaves 2) I get bored of the sex 3) her attitude changes (aka turn into wifey territory) and she nags at me.