Two things, firstly it's about maturity it's not about the SP feeling uncomfortable being with somebody with a vast age difference, she just doesn't want some giddy kid coming in a bouncing off the walls, this is a financial transaction they are offering their body for financial reward just like we all do for our own work whether that's sat talking to idiots on the phone all day whilst pretending that you really like them or crippling your joints ad back on a building site, none of us are there doing what we do because we really love it and can't wait to get to work in the morning, the bed's probably still warm from some pig ugly fat bloke with dragon like halitosis and and a skin condition that would have her throwing up if she saw him in the street, but she'll pretend that she came three times and loved every second of it just like she will for you when you knock on her door, I met a 24 year old who didn't like seeing under 30s because they were more awkward and tended to be the most unreliable.
Secondly, you can fuck off if UKP is gong to turn into UKE, every thread full of people trying to cozy up to prossies, it's bullshit, read above.