Cakewars is right. My point was that men find women in their twenties physically more attractive, but wouldn't necessarily prefer a relationship with them. I would add, however, that physically more attractive does mean, that women in their early twenties are the most likely to give men the horn on the basis of their appearance alone.
About teen porn. Pornhub have published a very interesting review of the searches made to its site in 2017. I won't link to it, but it's very easy to find and doesn't include any indecent images (I'm guessing that it's probably the only page on the site that doesn't). "Teen" was the 7th most commonly browsed category. In the previous year it was 5th. In that year it was the most popular category in a number of countries: Finland, Belgium, Poland, Turkey, Switzerland, Austria, Hungary, Croatia, Turkey, Bolivia, India and Madagascar. Apart from the last two, these are not countries noted for having a younger demographic, and so it is reasonable to assume that at a fair number of older men are searching for that category.
It is obviously quite normal for the average man to find a woman in her teens sexually very attractive. She is, after all, reaching her peak attractiveness (which would appear to be the early 20s). So those of you saying they'd leave your DHs for searching for teen porn need to bear in mind that if they've done so, they've done nothing abnormal.
I would add that it's probably also quite normal for a man to find a girl of 16 onwards increasingly sexually attractive, depending on how developed she is. There should be nothing controversial about this statement. There is a wealth of evidence, both current and historic, that it is true. Due to the (absolutely justified) concern about paedophilia and sexual assault in the last couple of decades, it has become normal among women and men to pretend that only men who are disordered in some way would find a girl in her mid to late teens sexually alluring. The more honest answer is that yes, we men can find them attractive and society quite rightly expects us (men) to be able to control ourselves, and regards men who don't control their urges as preditors.
As an aside, I note that MILF was even higher, but I don't think this is evidence that men find older women just as physically attractive because it's a specific category for older women and just about all othert categories would feature younger women.
As another side, it's amusing to note the geographic concentration of favourite searches. For the English-speaking world it's "lesbian". For the Eastern bloc it's "anal". For Africa it's - unsurprisingly - African. For the Far East it's cartoon porn and for the historic area of the Austro-Hungarian empire it seems to be teens.