Every relationship advice offered on internet sounds like, "he is abuser, breakup now" and people are assumed as perfect who make one mistake and they have to be walked out of your life.
There is also rise of movements like Femminism and MGTOW.
A lot of females are now career focused and have no time to maintain relationship. A few are able to manage both at once. But many come out for dating when they are in 30s and they are confused like "I am educated and indepdent girl, why guys aren't interested in me". Men don't seem to value a women with career as much as females would like, they find it favourable yes but it's extremely weak.
Sometimes back I read in study that younger couples have more attractive kids and the kids who are product of love marriage are more attractive than those of arranged marriage.
Now, I can see why it could be that because when we are younger we are more superficial, we are more optimistic, more shallow and as we've less disappointments under our belt (due to less experience) we aim for most good looking and those who are able to succeed (maybe because they are themself good looking?), obviously end up with good looking partner and it can also be possible that reproductive process is better (less errors?) when we are younger.
Women also have very high standards when it comes to dating, they want too 10-15% men in looks and they compete for them. In such system, obviously the men who are in demand will see that they are rare and will exploit the opportunity and many women will be disappointed.
Repeated failures can also lead a person to depression and anxiety.
Plus, lot of people look at Instagram and find perfect looking people and start thinking of themselves as inferior. Attractive people are rare 1 in 1000 looks stunning without makeup or other camera effects. This rate could be higher in developed economies due to proper nutrition received throughout life and better healthcare facilities. It also depends on individual's and their family's awareness. But it's not a hard rule, people marry quite late in developed countries which can lead to unattractive kids.
Just looking at the number of people subscribing to those groups on Reddit, seems alarming.
A lot of people just do what internet tells them to do.
Kids often say, "leave it, you'll not understand" instead of making you understand what their problem truly is.