Teaching is very hard work. you have to plan all your lessons, set work, mark work, attend staff meetings and that's just the basics, i know it sounds nice having weekends and holidays off but a large part of that will be spent planning/ working for the following term. My Mum was a teacher for years, when i was little my Dad used take me and my brother out at the weekend so Mum could get her work done, sometimes she would take us to school in the holidays to take down and redo displays or clear out her cupboard, she did get some time off to spend with her family, but she worked her socks off, i also noticed as i got older that she struggled to not get too invested in her kids, the ones who were poor or dirty or hungry or SEN tugged at her heartstrings. You need a long fuse and a kind demeanour but also be a disciplinarian and authoritative and somewhat detached. I really believe kids are becoming more disruptive and resistant to authority, are you prepared for that? Parents will get at you for not challenging or overchallenging their little darlings, they will ask you how you could possibly teach them this or that or if you a even teaching them at all, why they aren't the centre of attention as if there aren't 20 other kids in your class cos their child is gods gift. Lastly there is the politics of the workplace, this was the straw that broke the camels back for my Mum, a new teacher came in and picked on everything my Mother did, accused her of teaching the wrong things, said she couldn't control her class etc. She left and became a housewife and was so much happier, looked ten years younger within weeks and totally focused on her own children. I can not tell you the amount of teachers i have heard of who had nervous breakdowns because they couldn't stand the workload.
If that hasn't sacred you off, its a very rewarding job. Good luck.