I know several fire alarm enthusiasts. Fire alarms are acquired after being retired, nobody would damage or steal from an active fire alarm system as that’s a risk to everyone’s safety. People who steal from active systems would be shunned. Most fire alarms enthusiasts get are bought off eBay or similar sites.
Yup, because people 2000 years ago knew exactly what a nuclear reactor is and that one would explode 1900 years later. How the hell do people come up with this?!