I was listening to a Red Pill podcaster recently (I think it was Rollo) who said something along these lines:

"It's older women who have a problem with age gap relationships, not younger women. Older women want a man who is responsible and wants to settle down. Do you think young women care about that?"

First of all, in my experience this is false. Zoomers tend to be more critical of AGR than older women. Secondly, notice that he says that older women want someone responsible and the assumption is that younger women don't care about that because they're more carefree or whatever.

And this is the problem with age gap relationships. They attract many men who want to be lazy and irresponsible even at 40. Obviously, a 40 yo woman won't put up with a guy who lives with his mom, doesn't have a stable job and wants to party every weekend. However, a 21 yo woman might temporarily put up with him because from her perspective he's not much different than guys her age.

The problem is that the 21 yo will eventually grow up and realize that the guy is actually a loser for his age. It always happens in these cases. Yea I know why you're saying "not all age gap relationships". I agree. I am actually in an AGR myself but the difference is that a) my man is not a loser, b) I met him later in life so I know how to recognize losers unlike the average 21 yo.