It isn't like I do upgrades for the sheer thrill of it :P generally I want a newer version of some proggie I like and it brings in the whole enchilida of dependencies (think KDE here). I usually go for the update if something I use has an annoying glitch (again, think KDE here) or there is new functionality. Then you get into the whole chicken&egg thing or is it shoe & nail

I held onto BH4 for ages in unstable debian terms (2-3months ) but finally gave in for something or another. If it wasn't for my fondness of KDE apps I probably could make do with far fewer upgrades.