Nope, celebrities are nice in theory and all but their relationships are usually rocky and don't last that long (not true of all celebs but a lot of the news you hear about them is "so and so are getting a divorce, this person cheated on that person"...it sucks.
I know that sort of thing happens in everyday relationships too but at least you have your privacy if it does.
Besides, I'm pretty damn happy with the guy I have right now. Hard to "upgrade" from someone that's already almost perfect and likely to be my soulmate. ;3
Celebrities are vain, narcissistic, and their whole lives are about telling lies. Their public lives are a front made to garner a reaction they choose from the public. I'd never choose a person like that over a partner.