Some celebrities do sell lifestyles and products thats the whole success of some celebrities.... you can smell like me, look like me, have make up like mine, you know how my wedding was, you know about my divorce.. i do believe they do self lifestyles.
For the celebrities that hold themselves up as lifestyle examples like Martha Stewart, Gwyneth Paltrow or Oprah Winfrey (couldn't think of a male one), I have no problem with the assertion that the life they're selling should be one that sets a good example for the people they're selling to.
For the ones endorsing products or selling photos of their wedding, that's no different than selling whatever they were famous for in the first place, so I stick by my earlier point. I might buy a Mach 3 razor because Tiger Woods says it's good. If the razor sucks I can legitimately be mad at Tiger for lying to me. If, on the other hand, I cheat on my wife because Tiger Woods did it, he's not responsible for that; I am.
As Ms. Winehouse herself put it, "I didn't go out looking to be famous," Winehouse told the Associated Press when "Back to Black" was released. "I'm just a musician."
I dont expect them to behave differently from us but then i expect them to live inside the law and get treated the same in courts etc...
Expecting celebrities to live inside the law to a greater degree than non-celebrities is just asking to be disappointed. As for getting treated the same in court, they get treated the same as any other rich person in court, but that's a rich justice v poor justice problem rather than one of celebrity.