I think he's, perhaps not 'good', but definitely trustworthy in the long run... ever heard of the ends justifying the means? By killing DD and cementing LV's trust in him, he's guaranteed his place as LV's most valued 'friend', if LV does indeed, have friends. From this vantage point Snape can more than make up for the death of DD by saving the entire wizarding population alongside Harry when the time is right. That double agent thing is totally spot on ✅
It can still happen...
Hah!
😆
Anyhoo. I think there's more to the Snape killing Dumbledore debacle than it seems. Dumbledore actually BEGGING for his life is completely out of character. And Dumbledore has already implied numerous times that his life is not important. Harry's is.
He'll probably pull a Gandalf in Book 7.
still you have to REALLY mean it to kill someone. and that would A LOT of underlying anger from Snape towards Dumbledore.
and i think theres a reason Sirius didnt kill Wormtail in the book, besides the whole turning him in for the crime thing. maybe JK wanted to prove you do have to be evil to kill.