I'm leery of systems that automatically restart services when they crash, especially if the service just crashes again at startup, and you get into an infinite loop that eventually runs you out of disk space with *.core files.
It takes only a trivial amount of brains to prevent such loops, even Windows NT svc does this fine.
Then you have time to investigate why things are failing on one node, and can implement a proper fix.
You aren't going to investigate why crond died one time, after running for several months straight, if it can just be restarted and run for several more months without problems. With enough servers, you'd need a dedicated employee spending all day doing nothing else, and almost never finding anything that can be fixed. If a service keeps crashing, THEN you can investigate.
It's almost always something transient and trivial like a DNS server just didn't happen to respond in-time. Investigating all such occurrences is stupid, offers no return, and the situation is made 10X worse when you get a paged at 3AM every single night, because there will always be some random box in the cluster with some transient failure of one service.
Auto-restarting crashing daemons is not a feature. It's a band-aid over top of poor system administration.
Only someone who has never administered 1,000+ servers would say that. Sooner or later, the most reliable services are going to crash. With hundreds of servers, you'll see it several times every day.
DJB was no fool when he included the feature in DaemonTools, and he didn't do it because his software was crap, or because he doesn't know how to administer a system. The same goes for the people behind every major Linux distro, who have decided to adopt systemd. They aren't doing it for shits and giggles. And desktops make up such a tiny percentage of RedHat's sales that it's ridiculous to claim they'd make any changes that aren't for the benefit of their big server customers.
Telling other people THEY shouldn't have a feature that YOU don't see the need for, is the crux of this whole SystemD holy-war and flame-fest.