Oh, yeah, politicians working for themselves, that's the exact same reason why taxes on rent are usually kinda low/treated specially.

Yes, really long loans are predatory or if you want to look at it from a different perspective, a result of a non-functioning system. Financial obligations tax mental health, trap people, make enormous cumulated profits on capital without any work & negligible risk.

Central banks restrict max durations on mortgages/loans as is (also like what clients minimal disposable income after loan payments must be each month, age, max ratio of loan to property value, etc). And yes, if nothing else changes, that is bad for young people trying to buy a house, start a family, central banks acknowledge that, but their job is monetary policy/stability, not social policies - the government is the one not doing their job.