Why do some people choose to approach celebrities in public while others prefer to leave them alone?

Why do British people prefer simple condiments like ketchup or brown sauce on their bacon sandwiches instead of adding more complex ingredients?
Why does it feel harder to cope with a breakup when you see others dealing with worse situations? Is there a way to change this perspective?
What impact does divorce have on college-aged kids, and how can parents make it easier for them?