I’m glad you think the ‘risk is just fine’ for firefighters. Would you be good enough tell us what you do for a living that you feel free to consider the risk of firefighting ‘just fine?’
Aside from my Army service and Airborne, I have spent much of my life in far more dangerous jobs than fireman.
Roofing is almost twice as deadly, and construction, taxi driver, recyler/trash, farming and ranching, fisherman are all more dangerous, many jobs are.
It isn’t like firemen die all the time, obviously men don’t worry about such things, or we wouldn’t be building the world and driving taxis, and delivery trucks, and being fishermen and farmers and ranchers.
I used to be a volunteer firefighter. If the department is run correctly, there is very little risk. Every call/situation is thought out in advance, and practised. High risk for high returns, little risk for little rewards, no risk for no rewards. That means one only risks himself to rescue a person. If only the building is at risk, then no risk to personnel is undertaken.