Maybe it's good for a decade or two, but you still reach end of life much earlier than she does. Her sex drive is firing up as yours is slowing down.

If she is interested in having children, 30's are a good time to do so, 40's heading into 50's (you'll be 60+ by the time they're raised) not so much. There are plenty of biological reasons (some of which she mentioned) for not having a big age gap.

28 and 41 might not seem hugely different in energy levels, but 50 and 63 certainly are. And if you're into hot young women, who's to say you don't just trade her in when she gets to the messy stages of motherhood and perimenopause?

I'm suspicious of any man who can't find a woman his own age (or at least within a decade).