WiW has said pretty much all I would like to say about the emotional side of it. But obviously we can't speak for all mothers.
I am in my empty house tonight alone as the dc's have gone back to their dad's and I won't see them for 4 days. I always cry on Tuesday nights. I suspect he doesn't cry for hours the night that he hands them back to me.
I have been so depressed over the situation earlier this year that (incredibly counterproductively for me, since it started with feeling the loss of the kids so much) I was too ill to look after them for 2 weeks.
I am acutely aware that xH (who got the house and got to keep his job, while I had to give up mine and relocate to accommodate the share...long story) has me trapped here in a particular part of London for the next 12 or so years.
I will have to live close to him and to the school he has chosen for the kids (he has already told me their school, an expensive one, will NOT change until they are 16. I am not allowed to argue with this) if I want to maintain term time residence. Taking his calls about uniform and school notes. Undermining and competing with me, frequently (he has to be the 'better parent' and has told me many times that my depression disqualifies me from being a good mum and that his nanny, who has the kids in the week from 8am-7pm, is a better parent than me.)
I also hate this feeling that my children are having to live like little parcels, carrying bags back and forth, losing things all the time. I would not have liked to grow up like that.
My split was not amicable and I feel that he imposed the solution he wanted rather than trying to co-parent in a way that would work for us both. I didn't want 6 days a week or to reduce him to every other weekend. He in fact went to court to try and reduce me to every other weekend when we split, and I managed to fight it down to 50:50.
That being said, it is what my kids know. I have concerns that my 4 yo has been damaged by being parcelled around from age 20 months but who knows. I can only try to make their time with me as good as I can. They adore him and I would never wish to take them away from him. I only wish that he would offer me some flexibility, that there had been any respect for me as a human being involved in the split rather than just an exercise of control.
I worry very much for women in my situation as I think shared residence orders in non-amicable situations tend to come off worse for the woman. Women undoubtedly suffer more from losing custody and society is not very accepting of their problems. Whereas a man is a 'superdad' (although I take on board what Truculent says about men's jobs failing to provide the flexibility that is needed: a problem to which my rich ex responded by hiring wraparound care for 'his' days.)