Alls he did was beat up buuhan as ssj. He only lasted a few panels anyway. I didnt see much in him for him to stay fused. Besides it would have been a horrid ending if he just wiped out super buu after taking everyone out (although since goku couldnt beat super buu that was his first choice only it would have been a fusion dance not vegitto).
It tore me apart when Vegito defused. I felt as if everyone around me did not deserve to live. I found every aspect of living life and life itself being utterly disgusting and horrid after becoming infuriated upon Vegito's defusing. So, I had to eradict those living beings around me. The plants, the animals, the humans, and the usual things that live on this land. Then it was time to send myself to Oblivion.
Luckily, and thankfully, I'm not a Super-Freaky Dragonball fan that stands for everything DBZ and if any aspect of it was torn apart in either in real-life or in the DB universe, then I would kill everyone and everything around me, including myself.
Well it turns out that I'm not what I have stated above. So, I guess I wasn't mad when Vegito defused because it would've caused some sort of drama between Bulma and Chi Chi making it into a Soap(I think that's how you spell it) Opera.
Ok. that's nice to know, but just call me BDK. Shin, BDK. n3oZ(Clan Leader)