We do tend to get hung up a bit on this question. I do believe that God is about love first and foremost but there could be situations where for the good of humanity He might tell someone to kill someone else. It is not likely. The oft-cited case of Abraham, remember, was after Abraham had spoken to God for years - and remember Isaac was born after God told him he would, even though Abraham's wife was well beyond child-bearing years, so Abraham could be sure he was talking to God. But there are no circumstances I can imagine where God would tell me to kill someone, and the first thing I would do if I though He did would be to seek professional mental help. I'm certain God would understand.
@Homie: We can talk to some degree about temple garments, why we wear them and so forth, but not what they symbolize. That would be violating church rules. But I was careful not to say anything that can't be found in LDS-approved material, that church leaders have allowed published and so forth.
Regarding exaltation: it doesn't say explicitly in the Bible that we can become gods. However, Paul says things like we can be heirs of God and joint-heirs with Christ (meaning we inherit what he does - and what does he inherit?) in Romans 8:17, and in Revelations John says that those who overcome will inherit all (Rev 21:7). Admittedly, one could interpret these verses differently. The Book of Mormon also doesn't say anything explicitly. But in addition to these books, in the church we have additional scriptures that were revealed by God to Joseph Smith and succesive prophets, known collectively as the Doctrine and Covenants. Several sections in these explain exaltation, what it is and how it is achieved.
Another way we look at it: we believe that in a sense, divine nature is just a perfected form of human nature, or in other words that to be a perfect human is to be divine. So to be a god, as we understand it, is to be able to love, to feel joy, to worship God more perfectly than we do now. Therefore, if God has the ability to make us gods (and we believe that He does) and loves us enough to want to (and we believe that He does), why wouldn't He? After all, we believe that we are his greatest creation, and if He can help us become something even greater, it adds to His glory as well as ours.