It is quite ridiculous to claim that men aren't affected by rejection (they are) and that a man will be fine by 70 if he is constantly rejected, or that he may find a young wife to give him children at that age (an older woman won't be fertile enough).
Modern people are already brainwashed against even small age gaps, so a 70yr old and a 30yr old is already going to require a miracle let alone at 20yr old.
What kind of society do you think we will be living in 40 years from now? A different one. So the 20 or 30 year old guys might find it difficult among the whores to find someone, but among the more traditional women it will be easier. I see attitudes already changing back to what they used to be.
You argument is coming from a snapshot in time and culture and region.
Even now, a 70 year old man could find a woman in south east asia.
I know one early forties man who had no problem talking to a 16 year old in the phillipines online. Traditional Mass and all. And that was recently.
If you let yourself get bogged down by what other people think, you will have a lot of difficulty finding a spouse.
Especially if those opinions come from backbiting, autistic trads.