Everyone wants stuff they don't have
Now its possible to have what you don't have without fear of ''consequences''.... (when I mean consequences = material or not deadly and unsolvagable)
Before you were STUCK with decision you made... so you made them carefully.
If you go into the women part: Women are biological always seeking control of their ENTIRE SPACE.... the more you expand her boundaries... the more she wants it, the more she must be that space.... now women have no need of male in terms of ''work-family-financial security etc...''... they work and raise kids (so biologically, her brain must OWN ALL OF IT... women brains never shutdown: they multitask naturally) ... they date multiple guys (so they own that dating space too) etc etc...
So if they can feel to have more ... they will seek it...
Like Amante Silvestre wrote: If you have a trick that work... of course you'll want to apply it again
Tha'ts why filing the woman with emotions is the only way to keep her....but no one is perfect and time does its work. Also add, that family education and school education hasn't been grooming anyone to be ''wife-husband-father-mother''... we basically have to write the book ourself.
Trials and Errors, each leaving a scar.
Sometimes our fear are our worst enemies, sometimes are intuition is right, or wrong placed etc.. etc...
The important part is living according to yourself. (being happy)
I have 3 views of myself: 1) The Happy Married Guy 2) The eternal single guy 3) The eternal single with plates lol