Mine were 3 & 5 when I upped fŕom PT (0.6) to FT on a temp contract. DH was working away a lot that year and often abroad. We normally split the school/ nursery drop off, but I often had to do it solo, often at short notice and 35 minutes to drop off in two venues and drive to another town 20 mins away felt like living on a knife edge. The final glory was DS's TAs going on strike and having to be collected at lunchtime with absolutely no childcare options to tide him over to the afterschool wrap around. Thank goodness my exam class had left on study leave giving me enough window to collect and return and then teach with my 5 year old present...
I was knackered. I'd get up early to get an hour/ 90 mins work in before dealing with the DCs, then getting to work in the nick of time, working in school until just after 5:30 to maximise working without distraction, picking up both DCs in the nick of time, dealing with domestic stuff/ dinner/ bedtimes then getting working again from 9pm until about midnight. PT was definitely easier as I could spread the load over my free days and spend more time relaxing and actually being a decent mum.
DS hated 50 hours a week of wrap around/ school; it turns out he has several high functioning special needs/ learning difficulties and it wasn't fair to keep teaching at the cost of his happiness and I became a SAHM. It wasn't intended to be long-term at that point, more while DS2 finished nursery.
I didn't actually see much more money for FT because of tripping the threshold on my student loan, my tax code, and the costs of the DC's childcare and no longer getting a subtle sibling discount. It was poor value for effort!
Huge respect to teachers still in the profession; I now help out a lot in the DC's school. It just wasn't right for me to continue in the particular circumstances my family were in. I haven't looked elsewhere due to DS's dislike of childcare and need for quiet time at home, especially as holiday sports clubs are hell for dyslexic children with ASD!
I won't say never again, but not until I'm content that DS doesn't need childcare.