Lulu, I agree with you that a mum needs more than being alone with the children. That might be going out every now and then with friends or her DH (and leaving the children with a known, loved babysitter) or it may mean coffee mornings or whatever. Being a SAHM where you SAH and don't go out to see friends is VERY detrimental.
So so true. I think especially in the early days/months I would have lost my marbles if I hadn't been able to go out (with my baby) to meet other people. Not because I needed stimulation, I needed support and understanding and advice. I actually think that if you have a young child, it is not good for them if they're stuck in the house with mummy all day either. going out on playdates and walks is much more stimulating for them, too.

Saša