This is purely my own observation.
The patriarchal way in which our society is structured is seriously shit for women but it is also shit for men. They definitely benefit when they're young - they don't have to fear sexual violence or sexism, they earn more for the same jobs and being a parent benefits their career chances rather than damages them.
But.
Because men are taught from a young age to expect everything to go their way and because there is no focus on them developing emotional resilience, as they get older and life gets more complicated they really struggle. Because women have to deal with difficulties from a very young age - from being taught to cover themselves up at age 9, to having to deal with periods at age 12, to dreading the threat of pregnancy from whatever age they become sexually active, to the threat of sexual violence from as soon as they're aware of it, they are simply more able to face a difficult situation and deal with it.
Men are taught to prioritise work. They don't carry children and they don't go through labour. They are not expected to take parental leave, or take time off for children. Men very very rarely are the ones who take on the life-changing challenge of dealing for hours upon hours with newborns. So many incredibly hard challenges that women routinely face are simply bypassed for men - there are very few times where their mettle is really tested. IMO facing these challenges matures women massively. Men may also mature but the effect isn't quite so rapid or pronounced I think.
So, life goes on. Women start to throw off the shackles of a sexist society and start to find their voice. Having faced so many challenges life starts to get easier. Many women will have been assaulted, will have had knockbacks simply for being women. They are resilient. Men on the other hand, find they're getting older. They haven't necessarily invested much in their family, who are carrying on happily without them. They haven't necessarily bonded very closely with their children, who look to their mother for help and reassurance. The riches they were promised by a sexist society no longer seem accessible - they aren't as attractive as they once were. Cue a midlife crisis, going for younger women, a desperate bid to get back that sense of being entitled to everything.
Men are prepared so badly for the reality of adult life. It brings such misery to so many families and is one of the main reasons for the extremely high rate of male suicide IMO.
Men are not emotionless. They feel everything women do. But they are told they shouldn't feel those things, they have no idea how to process it.