To quote myself from a similar post years ago:
An OS is the bit that allows communication from the hardware you have to the apps you want to use.
It doesn't have to be an "us or them" in the end. It's better for everyone if it's "us and them"
I know people still using ME and they are thrilled with it. Same with 98, XP, OSX, OS8.1, Ubuntu, Red Hat, Damn Small, etc. It doesn't friggin' matter.
Find the applications, security, hardware, price-point, support services, and usability you are comfortable with and then use whatever OS fits you best.
I use Vista and XP daily. I use Ubuntu monthly and I used OSX off and on over the past few years. Whatever floats your boat, right?