Exactly my experience. I remember when I joined my company, after a couple of months I thought my job was pretty demanding but oncall added another level of stress. That being said, it's certainly less stressful now. At least, I can solve a bunch of issues myself, and I'm not lost in the internal tools anymore. And it's pretty rare to be bother in the night. And it's not like we're doctors or something. Worst case, somebody won't access a service for a few hours...