I sometimes read 'active' threads about difficulties mums are having with their children - it's purely out of curiosity / boredom as I have none of my own (through choice).
Once in a blue mood I idly wonder what life with children would have been like. That ship has long sailed, I'm in my 50s and have a lovely life with my DH but I do sometimes wonder as I get older if I would have enjoyed life with older teens / 20s and beyond, I'm sure I would however I wasn't willing to go through 18 + years of child rearing to get there!
Today I am reading a thread about a woman having trouble with her teenager and I think to myself that I am just not equipped to handle that. I know the strength of a mother's love (allegedly) would make it bearable but the thought of a teenager shouting or swearing at me in my own home would make me just want to argue back or throw them out rather than try and 'bond' with them, understand them, let them away with crap ("pick your battles") etc.
I know that most children / teens are probably, largely, wonderful but it's the outliers that I read about here that make me truly thankful I made the choice I did!