I guess the honest answer is because you've got to imagine the dog is only around EOW. It's hard to explain to people that have never been in that situation and people always get up in arms when you say they're not a very big part of your life, but that's often the honest truth. For the vast majority of the time, they aren't there are it isn't happening.
Tbh one day of that nonsense with the dog wouldn't fly with me, never mind the regularity of it.
EOW is a lot. It's also the anxiety as the custody weekend is approaching and the time to wind down when they've left.
All the days in between might be okay, but there's always the feeling of dread.
Now a lot of step parents on here describe a level of disrespect from their partners around the subject that would compel me to leave regardless of how often the kids were around, I totally agree on that. I don't know why they put up with it
I guess it's the same reasons that women don't leave other crap relationships, that don't involve SC. Like the finances, fear they can't do better, lack of confidence, bio clock ticking, for those who have shared kids, they don't want to be a pt parent and of course crazy stupid love...even though your OH treats you poorly or let's his DC treat you poorly.
But when the child is only there EOW and it's a bit tough, but the rest of the time is great, and your partner's attitude is alright.
If my partners attitude is not alright EOW, I wouldn't find that acceptable.
I honestly think it comes down to individual levels of tolerance for a situation they're uncomfortable in.
I was uncomfortable when I was with friends and their kids behaviour was bad or just annoying..I got irritated that the parents didn't correct it. There's not a chance I'd put up with that EOW or more.
I just ended up suggesting we meet without the kids in the end.
I do sometimes wonder if it's more SMs who feel this way than Stepdads, or whether it's just that women are more inclined to talk about it on forums.
In most cases it's mum's who have most time with their kids, so their new partners have say 12 out of 14, sometimes more days with their SC and yet I hear a lot of SMs saying they couldn't cope with more than EOW.
Perhaps it could be that men (on the whole) are more accepting of SC than women are. I guess that's a whole other thread in itself.