DO NOT say you ruin your dogs...that's just not true!
But I can say I know the feeling you have.

I've done everything from day one to socialize Bon but still he has a problem with other dogs. He'll strike with no warning and it just drives me crazy. So I've learned I just can't have him around other dogs where there is even a remote chance he could get to them. He outweighs me and I'm not sure if he ever got into a fight with another dog that I would even be able to break them up.

Don't beat yourself up, I do that too and it's just not your fault.