Vegeta: He let Vegeta live on purpose and sent him away for the planets destruction. Probably because Vegeta was really powerful and would've made a nice addition to Freeza's army. But, if he feared a Super Saiyan so much why would he let Vegeta survive? Vegeta was the one who was most likely to become a Super Saiyan as far as Freeza knew. As a small child he had power that made Freeza's troops shit their pants.
Nappa: It is also implied that he let Nappa survive on purpose. Nappa was known to be very powerful for a Saiyan and he had a close bond with Vegeta, but what was the point in letting Nappa live?
Raditz: Raditz would've been a young-ish child when the planet exploded. I suppose that Raditz was just on another planet at the time and Freeza didn't feel like waiting around until he returned to destroy the planet. Raditz wasn't a big risk for becoming a Super Saiyan anyways.
Goku: Goku was obviously a mistake and was never meant to be sent away on that day. Freeza's men just made a mistake by sending him off.
So, why would he let Vegeta, Nappa, and Raditz go if he was so paranoid?







