I’m sorry for your negative experiences, but please be mindful that not only your subjective world exists. I might have been extremely lucky, but all my previous rental places were maintained by nice folks.
Its not that the person themselves cant be “good” but the act of hoarding and limiting access to a basic human need, like shelter, to use it as leverage in order to extort profit from others is wrong.
Landlord-ing is inherently bad it doesnt matter if the person doing it is the nicest person on earth.
“Nice folks” doesn’t mean shit if they are paying the absolute minimum to upkeep a building and never missing a chance to raise the rent. The overwhelming amount of landlords are the above.
My previous one hasn’t raised rent for five years, and even then he asked if it would be okay with us. Which it was, for even the raised rent was significantly below the market rate and he always responded quickly to any issues we have raised. He was a blue-collar worker who inherited a flat he didn’t want to sell, so rented it out to those who couldn’t afford to buy a property on their own.