What should I do with an old fire extinguisher?
They can. Will they? Nobody knows. Apartments are REQUIRED to provide smoke detectors in each unit. If they do not, then they are fined and may be shut down - which is why they give you that dire warning about not disabling the one they provided. If your smoke detector was beeping all the time, you should have notified the landlord and had it checked instead of removing it. Do you have any idea how many people die every year because of not having smoke detectors?? Call your local fire department or fire marshal - most places give them out for FREE. Or isn't your life worth free?
so you're asking if $50 headphones are better than a $300 pair? you cant be serious.