Why do people become teachers if it's so bad?

I'm currently in my second year in university in the Early Childhood Education program and I just started field experience in a toddler classroom and I seriously feel like I'm loosing my sanity. All my life I've wanted to be a teacher and I love working with the children and comming to school but it feels like whichever way I turn I'm being told to run for the hills from this profession and I'm going to work 70 hours a week basically unpaid and I'm going to go home and hate my life and cry myself to sleep every night. I feel like besides medicine no other profession has people acting like this when you say you want to pursue it. I only ever get two responses: from non-teachers: super condescending "wow that's very noble of you, what's your second job going to be?" laughs like they just said the funniest thing ever

From teachers: "RUN! I HAVENT SEPT IN YEARS AND I WORK 8 DAYS A WEEK 24/7 PARENTS WAIT OUTSIDE THE BUILDING AND BEAT ME EVERY DAY BECAUSE I DIDNT PAY ENOUGH ATTENTION TO THEIR KID AND ADMINISTRATION TELLS ME TO GO SCREW MYSELF EVERY DAY" (obviously exaggerated but that's how it feels sometimes)

It's really starting to mess with my head, if it's really this bad why does anyone even bother becoming a teacher? It's to the point where I'm genuinely scared that I'm making a mistake, but at the same time the thought of working a "regular" office job makes me sick, is it really that bad and if it is, why are you still a teacher?