Fame
The tabloids, the fans, the agents, your exes—everybody wants a piece of you.
Many at the peak of stardom are too famous for words. They can't walk down the street without getting mobbed. They're constantly having their picture taken; even while doing the most mundane things. They can't walk the dog or even go to the grocery store without getting accosted.
People ask for your autograph everywhere, even when you try to go to the bathroom.
There is no such thing as privacy.
That's what you were working for right? With huge success as a musician come the obsessive fans. Some people enjoy that sort of thing. Others lament it. Of course your level of fame will probably have to do with how much you will be harassed.
Maybe you'd rather be a Jakob Dylan than a Bob Dylan.