I am an only child of a full time working mum. Mum went back to work full time when I started school, I believe she was part time before then, but my starting school coincided with my parents split and our moving 250 miles. I don't remember any of it.
I remember my mum not coming to assemblies, sports days etc. I was mildly upset but not enough to be affected. I remember long, wonderful summers spent with my granny and great aunt in a (then) popular holiday spot as they lived there. They were glorious, I don't remember ever missing my mum, I www spoilt rotten and having too much fun! My uncles chipped in to, taking me out for days or having me go to work with them, I loved it.
I have, however, grown up to be a SAHM of four. I am open about having had so many children because I hate being an only child, always have. I had a wonderful childhood but the grass looked greener. Now I'm on it I'm not sure haha! We had holidays, nice things, security, a lovely life. When I was older, 11ish? Mum got a school hour/term time job, and all I remember was different was that she was miserable because she hated it and I was glad when she moved on to one she liked!
I don't think either WOHMs or SAHMs are right, or WAHMs or anyone. Everyone just does the best/right thing for them and their family, and that's all we can do. Children are remarkably resilient and I think we often underestimate them.