Welp. Maybe I'm lighting my own witch-pyre here, but I've read the whole thread. Here's my response, for what it's worth.
I'm 35. I'm no Chris Hemsworth, either physically or financially. I am broad shouldered, barrel chested, thick torso'd and... well, I'm fat. Not morbidly obese, but I have a 42" waist at 275lbs and 5'11" height. I could stand to lose 30-50lbs. I carry it well and I am still muscular, but I'm nobody's prime catch.
I married a woman who was 2 years my senior, and she cheated with a younger man (2 years younger than me) and then an older man (a year older than her) with his younger wife (two years younger than me).
The only women who have shown ANY interest in me were older than me by 3-5 years. Not a huge gap, but older nonetheless. Not one woman younger than me has responded to any message or initiated anything herself.
As for attraction, well, I'll admit, I'm standing at work, and the women I notice are in the 18-25 range. They're young, smooth skinned, perky breasted, full buttocked, slender waisted, and objectively pretty. They catch my eye, and I think to myself, "daaaaamn. That woman is attractive. I wouldn't kick her out of bed for leaving cookie crumbs in the sheets."
But the moment I start to get to know any of them, or read an online profile, or whatever, there's zero connection. It's all a physical attraction. It's the sort of feeling like "a roll in the hay would be absolutely awesome."
However, I have a 16 year old daughter. The thought of being in a relationship with a woman who was young enough to be a child of mine is NOT appealing. I remember admiring a woman from behind the other day and then she turned around, and she couldn't have been older than 17, and I was taken aback.
I felt bad about it. I mean, yeah, biology is what biology is, and she was a healthy female of breeding age, and I am a healthy male of breeding age. She was attractive, and frankly, the ONLY thing that would make such a thing bad would be the societal influences (and the morals of an advanced society, of course) but I still felt bad because damn. She was just a kid.
Does that make me a creep? Does recognizing the attractiveness of another person make one creepy? Are we supposed to have such a tight lock on what is objectively attractive based on some arbitrary timeline, so that once a specific milestone passes, DING! they're allowed to be sexy now, let's freak it up!
That's wrong, in my opinion. It's no better than the people who drool over underage celebrities like that pink haired girl from Lazytown or the Olson Twins (before they were adults) like, "OMG, as soon as she's 18, she's legal to f***! I hope she does porn on her 18th birthday!" like the day before is bad, but the day of is perfectly okay?
Nah, piss on that. That's ridiculous.
I have found that the old rule I heard back in the day stands pretty true. Half your age plus seven. In my case, that's 25 (35/2=17.5 (round up to 18) +7 is 25. That's probably about as young as I would go. Using that scale, I would be fair game to a 56 year old woman, and admittedly, that would be weird. My mother is 56 this year.
My dating target range is 25-40. Ten years younger and five years older. If an incredibly charming woman who I find attractive and is older than 40 comes along, well, I'll probably consider it. However, my only FIRM criteria are that I have to be attracted to them and I have to be able to intellectually and emotionally connect with them. I won't have a relationship that is JUST sex and nothing else, and I will not have a relationship where I am not attracted to my partner.
So. That's how -this- man feels about women, younger or older.