Looks and lifestyles vary so much it’s impossible to say.
Im on OLD sites at the moment and the differences between some of the 50 year old men on there is staggering! I mean some of them may be lying, but there are real old looking, bald white haired wrinkly guys who talk like old men too, about pottering in their garden with their grandkids and enjoying a pub lunch on a Sunday.
And then there are those with a full head of brown hair, no kids, unmarried, doing all the sports and inviting you to go snowbombing with them.
So many of them have “undecided yet” to the kids question, like they have all the time in the world to decide whether to become a dad, which says they’re not looking for a woman of the same age.
I’m nearly 50 and haven’t ruled out men 10 years younger - one specifically has a real thing about the 80s, so at least all his cultural references match, even if he was too young to live it the first time around! Plenty of others a couple of years younger who have never married or had kids, so I need to work out how my life (my kids are all grown up teens now) fits in with theirs.