I've just come back part time after mat leave, in my sixth year of teaching and I do enjoy it. I feel good at my job, it's interesting, rewarding and (most) interactions with the kids are brilliant. Lots of funny, ridiculous and heartwarming moments.
However, I am working every day including my days off when my baby naps, doing marking. Workload is relentless, it's not possible to do the job in the hours given, and schools squeeze as much out of you as they can within those hours. Constant pile on, you think you're on top of everything if you don't take a break all day and work at a ridiculous pace, then they'll surprise you with a book look, observations, new CPD that's useless but time-consuming.
Being part time I can go in for parents evening as it falls on a non working day or I can phone the parents of every single child I teach in that year group in my "free" time (could be 90 kids).
It gets easier if you can stick it out through the training year - I did School Direct in a very tough academy in London - and the ECT years. My current school is much better in terms of wellbeing but it's still tough and my health has suffered, I'll be honest. If I left my current job, I wouldn't look for another in teaching.
Edit: I should add, I've worked in the private and charity sectors and did an intensive law course before training as a teacher. Teaching on a good day - work relentlessly, no meetings after school and kick work to other days, can mean in this school that I can leave at 3pm. Hard to do in other jobs/schools even. And I appreciate the holidays with my child. I didn't need firebreak holidays like this in previous jobs though.
TA - the brilliant ones are completely underpaid for what they do. Others seem to act their wage. A real shame when there isn't sufficient funding for them (or if you get a lacklustre one) as a good one can be game-changing for children. There's much better paid jobs tbf