GOATKU is the GOAT. He had been saving the Z fighters since he was a child. All of their old asses depended on a kid to protect them. He is not gonna let them waste a wish on him and he knows that on his universe their is always gonna be a stronger threat. He made GOAT decisionsAnd the 3 years it took to get back from Namek when he could've been wished back? Or when he stayed dead on purpose to train and leave Chi-Chi a single mother of 2 boys? Or the end of the series where he leave his family again to train Uub? This nikka is always finding some excuse to leave raising his sons to his wife and Piccolo.