Assume you rented a house for $2,000 a month. You own the home and it is completely paid off. You also live in another house that is also paid off. Would you quit your job (most likely a higher salary and benefits) to enjoy life and never work again for some money to survive? I would assume a very frugal life.
In the US at least, medical insurance becomes the biggest factor in a decision like this. This lifestyle isn’t free, you’ve got property taxes on 2 homes, utilities for at least one of them, and repairs/maintenance assuming you aren’t a slumlord. That’s going to stretch that $2000 a month pretty tight. If you can do all that, get decent insurance, and live the lifestyle you want then it seems great. But I’d do the math really carefully and consider what you’d do if you had to have the rented house vacant for several months between renters.