My current #1 on my A-list is 35, and her birthday is in one week. Hands down (or hands off!) the best BJ skills I've ever encountered. She's blond, 5'1", 105 lbs. and looks years younger than her age. She's never pulled any "emergency" cash requests on me, shows up (and leaves) on time, has no kids, no BF/Hubs, and in fact is Bi. We've been together for almost 2 years, while the other 2 to 4 on my rotation tend to last from 2 to 8 months.
But IME, she's the rare exception in the 30+ space. I've dated others over 30 in years past, and generally if we move on to BCD, they have been one to three dates then they fade away or I ghost them. Perhaps, as GaGa notes, the amount of baggage is the key. The more she has, the less you're going to like about her. Past older SB's that didn't work out for me had teen-aged kids, troublesome Ex's, and were barely disguising their attempt to lock down a new child support funding putz. The worst SB M&G dinner I ever had was when I decided to give a hot MILFY Russian 40 (per her profile) year old blond a try. When we met for dinner at a wine bar/restaurant, she pulled up in a 10 year-old Mercedes, was holding a YSL $800 purse and was quite obviously much closer to 50+ than 40. I stayed and we sat down at a table.... mostly because I just wanted to see where it would go and - hey - she just may have a 20-ish hot daughter. But within the first 20 minutes, she had unloaded a shit ton of baggage on me - all unasked. Two 20-ish sons who refused to talk to her one asshole, rich ex, shitty office job working for an asshole boss, hopes I could knock some sense into her eldest son who smoked, drank, popped pills and refused to work, and at the same time telling me she would help me get in better shape once I agreed to help her pay her mortgage.
Well, that was enough to scare the shit out of me. I excused myself to go pee, found the waitress at her service station on the way, gave her enough cash to cover the tab plus a tip and bailed out the back door. Once I got into my car, I blocked her number on my phone, and drove home. It's the one and only time I ever walked out on a M&G, and I don't regret it a bit.
So sure, you may find an older SB can be attractive and fun, is more dependable, has improved experience with slippery stuff and appreciates a strong masculine presence in her life that will pay attention to her at regular, but limited, intervals. But you may also find an old SB who wants to plug you into the void created by the guy she emasculated before you.
I still search for POT's between 18 and 35. But I rarely engage with a POT 28 or older. She'd have to be very hot, have several good (not pro or IG stolen) pics and appear to be more interested in fun dates for a little pick up cash than trying to find a baby-daddy replacement.
Life is good
The Cat