I also want to add (cause MN is a bit like therapy, right?) - that the time I did have with DS was not good quality time! Once I had picked up DS at 6pm - I then had to get a tired, grumpy little boy on an overcrowded bus, then a five minute walk home, then feed him (something from the slow cooker on a good day, or beans on toast), getting him in the bath, stories, crazy going to sleep antics (quite often sat on the floor in the hallway outside his bedroom / or holding his handing whilst working on my laptop or phone for several hours at a time whilst he screamed and wailed) - Then I would eat something myself, do some washing, pack bags, talk to DH for 20 mins or so depending on when he got in and then fell asleep, ready to get up at 6am and do it all again.
It was absolute hell, and when I moved to only working 4 days a week, I was completely marginalised at work until I realised it just wasn’t worth it!
I was physically and mentally defeated, I cried a lot, I ate badly, had no time for exercise, barely spoke to DH about anything other than practical issues.
But then ...,DH was offered a job in a different country and we moved, I am a SAHM though I do a bit of (well paid) contract work from Home occasionally - our quality of life has so dramatically improved, I’m a totally different person and the three years I spent working in that job with a child seem like a surreal nightmare !
(Sorry OP, I’ve gone off on one...)