As a young man in university I loved to go out, meet women, get laid. All my free time went towards sex and more sex. In hindsight, a total waste of time, but like any red blooded man, I love sex.
I realized one day that sex workers can give you exactly what you want, on demand, for a price. If I want to have kinky sex with a beautiful redhead on a Sunday night, I can book it. No games, no drama, no dates or seduction, just guaranteed fun on my own terms. For her it's work, so she will be professional and cater to my needs. I don't have to worry about the strings that come with "civilian" relationships. I don't have to care if she has abandonment issues or BDP and severe jealousy. It's a very clear transaction.
Now that I have a successful business, time is even more valuable. It's cheaper for me to see a sex worker any time the urge comes up than it is to spend time and money trying to date and hookup. For the time I'd spend trying to get laid, I can see a sex worker and with all the extra time, spend time with my kids, prepare a meal at home, go to the gym, network and build my clientele, and overall derive a much higher benefit.