Depends on your requirements, I'm jealous you can get away with something so simple, I cannot, and I also have poor memory so having it described in code been most helpful, if I ssh into a server after months of not touching it I barely remember what's on it anymore.

I think the most important thing for me is that I chose when I have time to upgrade, it's no longer forced upon me, that's why I prefer to depend on myself rather than 3rd party services for things that are essential. Been so many times I've had to put other (more important) things on hold because some service somewhere decided that they're gonna change something, and to get stuff working again you need to migrate something. Just got so tired of not being in control of that schedule.