I agree, most departments are not like PS4814 describes. Unless he lives in the South?
I think a big part of the decline was the end of Blue Laws in the late 70’s. Prior to that, you couldn’t do many activities on Sundays after church, except family functions. This included shopping and restaurants and taverns. The many private clubs like the Vets, Legions, Elks, Sons of Italy and all the Firemen’s clubs existed to give men a place to go on Sundays to have a beer, shoot a game of pool, pull the slot handles, play gin (or drink it) and socialize on Sundays. Many had kitchens and dining rooms for families to come and eat Sunday dinner (all you can eat fish or fried chicken for $3.75!). They also organized many activities and fundraisers at various times during the year.
So, in return for the privileges of belonging to a private firemen’s club, these guys would help fight (thankfully) the rare fire and they got good training in emergency response and were always available for the emergency call. Usually one night a week was training, followed by a few hours of socializing in the club room. In today’s world, Sundays are just like any other week day. Except for eating a Chick-fil-A or hunting, you can do almost anything on Sundays. I left Church at 9:00 this morning and the hair cut place was already open!
Just a note, I had an uncle electrocuted (they revived him, thankfully) and a cousin badly burned serving as a volunteer. Thank you to any of you that serve as a volunteer firefighter or any (also you paid ones) first responder.