True, but don't forget that the longer you wait with upgrading, the more compatibility issues you may run into when you finally have to upgrade. Linux has changed a lot since 2005.
I'm more devops than sysadmin, so more expertise may have changed my experience, but when I did run a CentOS server, I thought, "yay, this is great"... until it came time to actually update.
Then, I realized that I had simply been accumulating up all of my upgrade pain as debt - with compound interest.
By comparison, upgrading Debian servers from version to version felt like hopping from bed to bed in a mattress store. Aside from a missed footing or two, it was usually a nice soft landing.
Yes! Plus I get an unreasonable amount of satisfaction out of that server I last imaged in 1998 running the latest version of Debian. So awesome -- it might outlive me, and if it does, it'll be up to date!
