Re: All very fine.....love it when the anoraks get excited about stuff like "git"........
If you don't want constant updates the solution is simple : don't follow a dev track which is there specifically to allow frequent, poorly tested updates.
From your examples, I would suggest you want the releases marked 'LTS' or long-term-stable.
Try Debian. they're exceptionally careful about what goes in, and you won't suffer much harm if you miss out every other release for even longer life.