Maybe providers are not needy individuals but they're survival depends on the patrons, not to mention the typical lifespan of the provider career isn't one that's going to soley sustain them through their retirements.

"They don't need anybody else but themselves to validate who they are."
......
This is a very rare trait in a human,  
let alone a provider.
Just look at how TER numbering system can throw emotions into a tizzy.
It's a Number. They need a Number.
........
Most people are desperate for love and need the approval of others for validation.

.............
Guys like to hunt.
Once they've bagged the smart, independent one,  
it's on the next exotic elusive wild beast.

Most of us would rather have a partner than a trophy housewife who spends all our money.  If she's contributing to the finances, we're more likely to get all warm and fuzzy and spend money on her for romantic purposes.

I always thought it was our tits. LOL!

All due Respect Mr. Fisher...

You try and enlighten this and other boards like few others, in my opinion however I think its the Breasts......  

I do think an independent nature is attractive, though. It's an attractive trait in either gender.

...there is also a strong attraction to the demure, innocent damsel who needs our help... at least for an hour...😎