A surface understanding of manic episodes -- or their occasional representation in movies or TV shows -- makes them seem like a good time. You get lots done, you have endless energy, you're highly extroverted -- why wouldn't you be on top of the world?
Some people with bipolar disorder do experience happiness when in a manic state, but often, the reins of life can slip out of their hands. They become highly excitable, anxious and irritable. Their minds careen from one seemingly grand idea to the next, and their sleep rhythms fall apart. They may begin making bolder and risky decisions when it comes to sex, and may overindulge on alcohol or drugs. Some people start gambling or racking up huge shopping tabs. Mania can also cause psychotic thoughts and actions.
So there you have it -- another reason not to believe everything you see about mental illness in the media.