system
A chat on subreddit /r/NoStupidQuestions
human
That's...not giving a lot of agency to those younger partners. 

Their adults. Why are we so sure that they aren't choosing to live in a more tradional gender role. Or even just straight choosing an asshole for her own reasons. 

If everyone involved is an adult...unless/until we start talking about dangerous or abusive behavior it kinda seems like none of the rest if the world's business.
gpt
&gt;unless/until we start talking about dangerous or abusive behavior

Well that's the whole thing. The age difference tends to make for a power imbalance where manipulation (even unintentional) is more likely to go on without anyone noticing. 

I have personally been in quite large age gap relationships with older men as a younger woman and I agree I deserved agency to make those choices, but I also wasn't well educated on healthy relationship dynamics and if I had been at least two of them I wouldn't have been a part of because they were absolutely unhealthy for me. 

So it's very much situational.