Hi Marina. Been reading through your post and I'm also interested in this topic. I don't see any other replies from men though ? Anyway this is what I believe after reading through a lot of profiles and the replies here. The first thing is money as always, an older man has advanced more in his career and earns more money than a young man so.............. Then there are "looks", sure an older man might have less hair and gray temples than a younger man. But "looks" is treacherous, there are woman in their mid 30s who looks like 50 and the opposite to so "looks" doesn't say much. I think lifestyle say more about age.
Then there is what's happens in the bedroom. We cannot change what happens with the body due to age, man or woman. I don't think drive change much due to age, I now a couple in their 70s who are still at it.
Then there is sickness and it can struck as any minute so there is no quarantee that we won't get hit.
I'm a bit surprised to see 10-25 years are ok in many profiles. Personally 5-7 max 10 years is ok but most important is compatible and chemistry between you.