Look man you sound like a decent person, but it's not really the point. The system, laws, the entire concept that enable owning property and renting it out are barbaric, even if some landlords do their best to be fair and kind. Some slave owners treated their slaves well too.

In my mind, I'd demonise you just as much if you owned businesses instead, for profiting from the labour which others did, and not you, if it's any solace. But I don't really believe demonising normal people is really the point either. We've all got to live our lives and look after our families and so on. I don't think anyone can legitimately fault you for that, it's normal behaviour. But we should really structure things so that it's simply neither necessary nor allowed for people to do either of these things, and anything less is fundamentally unjust.