Raditz is the odd one out?

It was first assumed that Goku was the only good Saiyan since he bumped his head and forgot everything. But now it is known that both Bardock and Gine are actually pretty decent people too (see Bardock in the Granola arc)

So why was Raditz the only evil one? He was old enough too experience what a nice family was like since both Bardock and Gine love their kids (even if Raditz was sent off world for most his life they could still keep in contact through scouter which is far more family love than most Saiyans got)

So what gives? Was any good beaten out of him after his race died? Did being with Vegeta all his life influence him? What do you guys think?