I would say it's not just you, 99% of jobs are totally pointless or actively harmful to the world, if you ask me. Like you say, squeezing profit out of people and absolutely nothing else. But it's not really relevant to wanting to off yourself.

Even if you get to a job with a point, like doing something meaningful or for the good of society, it's not necessarily going to feel great from day-to-day, and might be even more disillusioning (speaking from experience here). I find that I just care about it less when other things in my life are going well.