You make a good point.
Here is where the breakdown normally happens:
The guy starts thinking that what they have together is "special" and that he is doing things for the woman that no other guy can do.........fvcking, emotional attachment, etc etc.
Guys often put the relationship even before themselves (stop working out, drop hobbies, decreased interaction with friends and social circles).
The woman sees that this guy is all in. With the wrong woman (which is most of them) the thrill is over and they need a new chase.
You break up thinking "she will be back.....we had something special". Or "no way she can miss me fvcking her". Meanwhile the phone never rings, no more texts unless she is hot/cold and stringing you along. The next thing you know, you see her out 3-4 months later and she is with a dude and looks fvcking happy. Thats when you realize that what you had wasnt so special, you arent the only guy thats great at oral, can keep it hard for an hour and are sized well. All of a sudden that emotional attachment and intimate quirks you shared werent that special.
You realize that you were replaceable.
That's when you go through the valley, get back to living for you, and get your mind right again. You realize people on this forum preach abundance for a reason. There is a purpose to having 2, 3 or more disposable women.
You realize that when she said she wasnt happy and wanted some space, you should have fully agreed, smiled at her and walked out.....hitting up chicks before you pulled out of her driveway.
In today's day and age, it is still possible to find a really good woman and have a fulfilling LTR. You just have to have fun along the way and dont stop living for you.
Most guys talk about how a woman changed what they did, how they did it, etc. The entered the relationship a man and was left a beta. They didnt hold frame and was pulled into hers. The guy that she started dating wasnt the guy that she left. She had eaten him up.
Keep frame, do yourself and enjoy women. Those who want to stick around will. Dont change for anyone but you, as in making yourself better.