This is mostly a cost saving technique that companies quietly incorporated as if it is quite normal. Anybody who complained or criticized were branded as not being team players or being old-school. Companies found a way to get rid of operations team and had developers do the same thing without paying them extra. Well, there are some companies like Google who pay for being on-call, but the vast majority does not. So you end up having to cancel your weekend hike when you're on-call, you know, just in case something blows up. You get woken up in the middle of the night to look at an issue which could be in some part of the system you are not familiar with. But who care, this is progress, right? Right? But there is an upside to the devops model. Now developers think through the part after the code has been deployed, they care about the debuggability, about resilience, and logging correctly and all those things which they casually glossed over before. To summarize, in my opinion, being on-call is okay as long as you get paid extra for it, otherwise you're just being used. Have a good day!