Political Weirdos

Siren enthusiast here. The fire siren has likely been there for longer than you and any of the firefighters there, and in fact fire sirens predate the concept of an "air raid siren". Originally they were used to summon volunteer firefighters to the station, and many still are commonly used alongside the pagers in case the firefighters don't have their pagers or there's an issue with them. In an emergency, this can and does save lives.

The sirens also serve a secondary purpose in alerting traffic to clear the roads for the responding fire engines and letting the victims of the fire know that help is on the way. Many fire sirens also act as a noon whistle which doubles as a test to ensure it works when needed.

Mechanical sirens are extremely reliable and require very little maintenance, so they can always be counted on to work when they're needed. Radios and pagers aren't always as reliable. While you might not enjoy the noise, they're an important part of keeping you and the community safe.