Question for the manga readers: Has Vegeta ever expressed regret for murdering Nappa?

With how much we’ve seen Vegeta develop into a person capable of empathy and love, and for how prideful he has always been and continues to be about the Saiyan species, you’d think he’d one day come to feel remorse for killing his most loyal ally and, presumably, best friend.

And surely Nappa would’ve been a great asset in future conflicts had his life been spared along with Vegeta’s. I doubt he would’ve made any decisions that would have betrayed Vegeta’s on Namek. So when Vegeta teamed up with Krillin and Gohan against the Ginyu Force before Goku arrived, Nappa almost certainly would’ve followed suit. And if not, then perhaps that would’ve been a more appropriate occasion for Vegeta to kill him.