You do understand that it is extremely difficult to clear up your misconceptions and biases in a forum like this, right? If you are basing your refusal to take God at His Word because of this, you are making a huge mistake.
Of course, the biggest problem is that you tend to twist what I am saying based on your biases and inability to understand the point. I apologize for ignoring what looked like a set of detailed, point-by-point responses from something earlier, but it does seem pointless to try and answer arguments made the way you make them. You presume knowing when something is good or bad, but you literally have no basis on which to presume anything.
"Why would he tell Abraham to kill his own child? Why would he tell the Israelites to exterminate entire cities and kill everybody? Why would he do any number of the things he does in the Bible?"
All of the answers to these questions are given in the pages of Scripture. I previously pointed out that it doesn't matter whether you agree with God's directions and motives, because this would be akin to a lump of clay arguing with the potter about what he is creating, or even arguing with the potter should he throw the whole project away and start with a new lump.
" Also, that wasn't the question I asked. I asked if you would do it. I know some Christians who would, . . . "
Have they killed anyone and then blamed God for telling them to do it? Playing hypothetical games along these lines is pointless- this is far too serious a scenario for most to know what they would actually do if they thought it was happening. God, however, does not speak to us this way in this Age; He speaks to us through His Word, which gives us the basics for when killing another person is right, and when it is not right. Even in the Old Testament God gives direction when it comes to self defense in the home- if it happens at night, when you are caught by surprise and cannot properly assess the situation, you are not liable, but Israel was directed to essentially fire a "warning shot" if someone was trying to break in during daylight hours.
And as for telling Abraham to kill his own son, Abraham presumed that God would raise Isaac from the dead, while God was testing Abraham. In this instance, the ONLY way Issac actually dies, is never. Abraham obeys God, God intervenes, Isaac lives; Abraham disobeys God, Isaac lives, things turn out radically different for the descendants of Abraham.