I think the answer is - because they’re lazy and want you to do their dirty work for them. I quite frankly, am not going to call the police over noise complaints because I think management should do something about that. Police should only be called when violence or tenants who get aggressive.
Not because of noise, I just think it’s management dumping responsibility onto you when they’re the ones with the power to evict people.
Um, to do something?
Because I’m paying them fucking rent money and shit for a spot? Duh!
Building manager isn’t your parents. If you have a problem with the building, that’s their issue, if you have a problem with your neighbour, you’re expected to deal with it like any other adult; talk to the person, if that doesn’t work, police.
To be slightly more polite, as this seems like one of your first places… You absolutely want to keep a neutral third party involved.
In my building, some of us are paying half or a third what new tenants do, the manager has a clear financial incentive to remove as many old timers as possible (and has tried her best.) If the norm was that building managers patrol for noise etc, you could much more easily get into a “he said/she said” with someone who has the means and motivation to remove you. Having the norm be police means that the complaint has to be somewhat valid, not just “enough that the building manager can increase their income stream.”
While the details depend on the jurisdiction, in most of the saner places landlords can’t evict over something like noise. Your anger is misplaced.
Have you tried being an adult and camly talking to your neighbour? Let them know what you hear, how its impacting you and some respectful suggestions on how things can be made better.
Also what kind of noise are we talking about and when? Life makes noise, and you chose to live in an appt with thin walls. Some noise is to be expected.