I taught high school for two years just out of college in the late 80's. I feel sorry for the OP, but I understand. At the core of much of the dislike of teaching is the disrespect that is much more prevalent now than when I taught. I see it where I now coach high school, and it has destroyed any desire to return to the classroom. But when I taught, EVERY day flew by. Most days, I couldn't believe I was getting paid to teach and coach.
Part of the attraction was that it was a Catholic school. It was all boys in a white urban neighborhood (with about 15-20% minority) with mostly tough kids. Still, the kids were generally well behaved.
Discipline was strong, the path of Christ could be referred to every day and there was an unmistakable understanding of the importance of the authority of the teachers. My smallest class had 38 boys. The largest had 44. There were still teachers using corporal punishment at this high school when I taught. One week into my first year, a mom at the "Meet the Teacher Night" told me in her thick Irish brogue that her son Pat had the hardest skull of her 10 kids, and don't be shy about getting his attention by driving some sense into his head with my hand.
I got to school at about 6:30 to 6:45 when it was still fairly quiet. I would do whatever paperwork was undone (track season was the toughest) and be in my 1st period classroom very early. Sometimes, a track kid would come in just to talk, or occasionally a student would stop by for extra help.
I would usually leave at around 6:00 after practice. Meet days of course went much longer. No matter how late I got home, there were always papers to grade or preparation to be done. I ran an optional remedial grammar class my second year in the evening because the kids in the (non prep/honors) class were so poorly educated in basic grammar.
It wasn't perfect and I had my share of challenges, but it was as much fun I've ever had when I was receiving a paycheck. To the OP's point, I see how things have changed.
Not that this is the OP's issue, but some people are not cut out for the disciplinary side of teaching. Without a strong presence by the teacher and the firm backing of the school, teaching and learning can get dicier.