They do create value. They provide maintenance free housing as well as short term housing (short term as in 1-3 years.) Not everyone wants to stay in the same location for 5+ years. If you move around alot It you want to rent is usually the better option.

The ability to rent is useful, but the idea that endlessly profiting off of the same property and doing minor maintenance is creating Value is silly. There's no Value being created through simply owning something. Maintenance creates Value, yes, but that does not make up anywhere close to the profit of landlording.