Why is hypomania so bad?

Hi. I am 23 years old and was recently diagnosed with Bipolar II Disorder.My psychiatrist wants to put me on medication namely a mood stabiliser but to be honest i don't feel i need it. I enjoy my hypomanic periods especially compared to the debilitating depressions. I feel ontop of the world and so great and happy and energised.I am extremely productive and creative in this state and i can take on multiple projects at once.My mind floods will all sorts of brilliant ideas. I feel like i am some sort of genius.I have painted many great artworks whilst in hypomania.I just don't see it as a bad thing.Why then does the Dr want me to take medication for it?Why is hypomania so bad?Thanks