Quote (SpamBam @ Nov 15 2016 11:38am)
They aren't unstable at all. They compliment each other completely, that is why whis said if they ever learned to fight together they would be unstoppable. The Majin Buu saga is where Vegeta truly changed and accepted earth and everyone in it as his home and family. At the end of the last episode where Goku told him to give trunks his energy he did it without hesitation. The old Vegeta who fought cell would have never done that, partially because Goku suggested it, and partially because he didnt consider the alternate timeline Trunks to be his son until after he was killed.
On a side note, Vegito is far more Vegeta then Goku, you can see this when he introduces himself as "The Fusion of Vegeta and Kakarot".
Still first time he uses it he has a 90% chance of failing and possibly killing himself. That's why this time he only uses it for a second when he really has to, to avoid getting absorbed or something, and doesn't seem to go as high as he did in the tournament. Probably because he if fails and takes himself out of the fight they will be fucked. The same seems to apply when they combine, they had zamasu on the ropes until they split unexpectedly so there was no need. And i still think it would have been more risky using it with higher ki when they had never tested it like that.
But yeah that last point! Not only puts himself first but calls him Kakarot lol