Completely understand. Ours is my "commitment" to the unit. We live together, have kids EOW and holidays. When we have them, Im the one picking up, cooking, cleaning, running baths, keeping the bloody schedule, organising the fun or suggesting that we all play games that wouldnt happen if I didnt do it. I communicate with their mother as well re swaps or need to knows and so on. And yet, once I've fed everyone on a Sunday evening and I want to watch TV in our room in peace, or basically the non child friendly TV that I actually wanna watch, Im not present in the family.
I also do not enjoy holidays with them at all, I have limited time off and do not wish to spend it watching DP Disney all over the place, so historically hes taken his mum with them, which she loves. But likes to tell me HOW HUMILIATING it is to tell his colleagues that, no, I will not be joining him and kids on holiday.
I can do the day to day, but I am noise sensitive and frankly just not a massive kid person. I dont have my own kids, I do have a great relationship with SCs, but DP really struggles with my boundaries and it generally kicks off when I feel that I am, again, being judged for boundaries that simply have not changed in the 9 years we've been together. Its as if he expects that one day I'll wake up and just WANT to be their mum, which I dont. myself and SC's are perfectly happy with the status quo.