I don't particularly care about how old clients are. We all have a different client base..
What I notice is not really about the type of booking like someone above mentioned, it's more of a difference in mentality based on the person's generation combined with other factors like the client's exposure to certain types of knowledge, certain discourse online, his personal background etc. Lately I've been pleasantly surprised by men under 35 personally.. A lot of them truly care about consent and are less entitled, their education is different. But that isn't necessarily true.. I've noticed my best experiences tend to be with clients between ages 29 to 50.. That is just an average. One of my favorite clients I saw recently was 56, I've met some lovely gentlemen in their 60's and I've been shocked by the maturity and intelligence of guys in their early 20's.
That hasn't always been my experience tho. My first year or two, clients in a certain age bracket, I'd say between 27 and 43, tended to be the worst. They'd cancel, no show, they'd be really rough and disrespect boundaries, ask for discounts etc. Things are completely different now. I sometimes get issues with clients who are over a certain age who grew up with certain values and look down on me for being SP or are overly demanding on multiple levels.. I guess my branding, the way I advertise and my rate structure have changed.. Experiences tend to be very fluid in this industry