What happens to prostituties, do they retire?

Can see here there is an age/value drop. I've heard of women going into their 40's, but demand for young girls seems high. So would strike me that their useful lifespan is limited? I have to assume the become an expense at some point, and like... do they have

https://www.psychologytoday.com/us/blog/sex-murder-and-the-meaning-life/201607/link-between-prostitutes-age-and-her-income
Retire to another job
Become Maddams
Just leave to go on streets
Retire on their savings
Don't survive
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@sha84
What happens to prostituties, do they retire?
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