> A lot of squatters want to abolish the possibility of someone having to pay rent to another person to have a place to live

That's exactly how you end up with no new or maintained housing, utilities and other services. How do you imagine system like that working besides a totalitarian government directly taking over all private property and rationing housing? (I assure the housing situation in Spain is not even remotely as bad as it was in the USSR).

> don't have a logical counter-argument.

Trying to form logical arguments that refute completely absurd and irrational ones is not particularly productive...