This conversation is so weird.
Most of the same old timers who talk about demanding better pay, better QOL, better management, how an airline pilot is worth more than they get credit for, etc. are the same pilots turning around and telling the OP to suck it up and deal with it. They had to deal with massive amounts of suck, therefore you should too.
I don't know of any other industries, outside of aviation, that expects so much of their entry level employees yet treats them with so little regard.
Something to keep in mind is what opportunities exist *outside* of aviation. It's a false comparison to say, "Well, what else are you going to do? Keep working as a CFI?" Heck no! You can do WHATEVER YOU WANT!
You don't *have* to be a pilot. I left the airlines and am flying a desk, doing aircraft sales nowadays. Very happy with it. My brother makes a full time living selling event tickets online. I have several friends from college who are happily working as teachers overseas. A few other friends have good lives as nurses. It's a big world with lots of possibilities. All of them have significantly better QOL than the majority of airline pilots and oftentimes make equal or better money.
To the OP: Good for you. I've got tons of respect for the people in this world who vote with their feet. Best of luck to you in the future.