You say Keck is not credible but you never posted any reason to doubt the credibility. 

I am not speculating anything, I referenced numbers from other sources. I then showed that even if the amount of lives saved with guns was a fraction (1%) of the high estimates we could still be talking about thousands of lives saved or protected. Now you can try to argue the number isn't that big if you want but the end point is still that you don't have the right to take away people's ability to defend themselves. Can I make you stop driving because someone else crashes their car? More young children die in backyard pools than by gunshots so why don't you crusade against pools too? 

You suggested that people who protect gun rights are to blame for victim's of gun violence, I am applying your same logic to say that people who want to take away gun rights will then be responsible for those who died because they could not defend themselves.