I guess is the privacy issue. If you are super duper famous, one of the worries is that it's hard to get to any place without someone noticing. There is the pressure to perform at Its best. Then if any wrong move occurs, then it may destroy their careers.
fame is a good thing and many people would definitely want to get fame but i still think that fame also have its own disadvantages and one of the disadvantages is that fame could make someone to have less freedom to do what they wish to do and how they wish to act,fame makes someone to have a kind of life that is monitored by so many people including the media and it could be uncomfortable for many people ..