Sword, that’s the depressing part of retirement communities. You hear ambulance sirens all the time. Seeing so many people die would be depressing.
We have three rentals in a large senior community. The back of one of them is directly across from the (external) Fire/Paramedic Station. It is on a greenbelt, gets incredible sunsets and was the perfect combination of dilapidation/price, so we did our research before we bought it. Turns out, the emergency responders use their lights, not their sirens for most calls. Our post-rehab tenants chose this property specifically for the sunsets and aren't bothered by the station at all.
In pre-Covid times, this community boasts over 80 clubs, several restaurants, a large theater, multiple pools, gyms, golf courses, sport courts, a ballroom, classrooms, a post office, a great honor system library, and more. There is an external shopping center with restaurants, full service grocery and hardware stores, plus a host of peripheral small businesses, all accessible via golf cart and a private gate, so no city street driving required. To top it off, it is way more affordable than where we live now.
The thing about aging and mortality is that either you and or friends are all going to die eventually, no matter where you live. In non-age specific areas, the new neighbors are likely to be young couples with babies, who don't even notice the "old" folks next door. #askmehowIknow. At least in Senior communities, vacancies are filled with people you're more likely to have commonality with, and who have time for new friendships.