@ww part of it is wanting to learn a New Thing (much as i grumble about modern susadmining) :3
lxc and systemd-{containerd,nspawn} are very much part of my toolkit when the usecases arise
containers seem especially nice for game servers.. updating has traditionally been a bit of a headache for me as i've got to remember all the little hacks i did to make it work in the first place
like, being able to make the standardized environement that the devs expect, it'll be powerful :3
not to mention, learning this stuff, it'll actually make me want to use software that's only packaged for containers, like wafrn