Charlie Sheen said If you are rich or famous you dont pay a prostitute for sex. You pay a prostitute to LEAVE after sex.
I am NOT saying what happened was OK but I can understand the motivation of not wanting a woman to come into the picture who might cost him and his family A LOT. And, to never be sure about any womans motivations concerning going out with him. Theres also the risk of claims of date rape, etc. etc. etc.
Understood, but any woman interested in a 77-year-old is going to be financially motivated or well past the born-on date or both. If he wants no-commitment, no-risk, he can fly to practically any country south of the border and have what he wants. Prefers Asians? There's always Thailand.