I think you guys are missing my point. I agree because its beta there are bugs, but even after GM, bugs will be present. Sometimes a lot, and sometimes very few. Here's my point, if a user is happy with his current OS there is no reason to introduce a new variable that could have a negative impact on him.
To put it another way, why spend 30 dollars on something that gives him no value but potentially introduces some bugs. I agree there are enhancements that could potentially aide users but if they're not interested then why go through the hassle.
That is cmChimera, you called it a mistake for people not to upgrade and I think that's incorrect. Will they be missing out on features, yes, but if that's decision its not a mistake.