Then you should not live in any rentable dwelling or apartment that stipulates so in the lease, seems simple enough for you. Many leases have such stipulations, and government subsidized housing is probably at the forefront of such things. It goes along with how much of and how many hazardous things the property owner wishes to limit you carrying into the place(There are a lot of stupid people out there doing many stupid things, things the owner does not wish to be liable for.). Blame the lawyers(And the stupid people).