I haven’t read all the thread but I just wanted to share my experience as that’s what you seem to be after.
After my first son I didn’t want to go back to the job I had left as it would have meant him being in childcare 4 days a week and I didn't want that for him.
When I was a child I was in full time childcare, Mon-Fri from 6 months of age, and then in childcare (before and after school) until I was 12 and I hated it. I probably saw my parents for about 2-3 hours a day and it did make me sad.
My husband had been in a similar set-up when he was a child too and he’d disliked it for the same reasons I had so it had always been the plan that I would be at home as much as I could be / wanted to be when we had children.
I didn’t give up work completely after my first son was born but I changed my job so I only had to work 3 days a week (one of which was a weekend day) and that gave me a really lovely balance and meant we only had to use childcare for 2 days a week.
After the birth of our second child I reduced my hours further simply because I wanted to be with him as much as I could. This was probably because I had already seen the years fly by with my first son that I wanted to cherish time with my second baby even more.
I have had to give up work this year due to health reasons and so I’m technically a SAHM now but the boys are 6 and 9 years old now so it’s a completely different scenario.
Although I reduced my days/hours when my children were younger, there’s no way I could have been a SAHM during those years.
I needed a break from parenting, I needed the stimulation, the socialisation and the mental challenge that work provided me with and if I hadn’t had just those few days a week to simply be “me” I think I would have lost my mind.
It doesn’t have to be all or nothing OP.
You do not have to feel guilty for feeling that the early years are tough and boring, because they really can be!