The "Why do you work?" thread was very interesting (and it helped me with an essay I'm writing!) so I just wondered about SAHMs - did you choose to stay at home, is it impossible for you to work, is being a SAHM enough fulfilment for you ... etc.
I am a SAHM myself although now that both my kids are at school I'm studying part-time, planning to work part time from Sept. I found being a SAHM hard but glad I did it.