We seemingly have very different experiences with rent.
All rent I've paid was agreed upon prior to me being charged it, and guns were never involved.
The people I rented from did the work of owning/managing the building and providing it for my use. Maybe this isn't a noble way to earn money, but I found it to be a really useful service, and it seems not dramatically different than most services I pay for (how much incremental work is Netflix doing for my behalf? what work is the bank doing to earn my loan?).