Why do I hate it? Read your responses in this thread. I assume you're an intelligent, reasonable person. And yet here you are telling me how all this marry your rapist stuff is actually good. Think about that.
And for the record, nothing ever happened in my life or in the church that scarred me. I don't know why Christians always immediately jump to that conclusion. The only thing that happened to me was that I decided to apply my logic and reason to everything in my life, not just everything minus god.
The world is a complex place. People do all sorts of things to survive. I assume you are American, modern urbane and confortable. Even today, there are places in the world where life is not so comfortable, child prostitution is a valid career option (I have seen that with my own eyes, though not used it) and perhaps maiming your child so they have a career as a beggar is the best education you can give (I have seen beggars and been told of this practice by locals).
I have not studied the Deuteronomy passage, I cannot comment on the replies you have received, but it is obvious from my reading that marriage was very different then, as has been discussed, and that there were severe economic consequences to being so used. Consider Stockholm Syndrome, and how it might apply in this context.
If you insist on evaluating everything by modern American standards, even the world today will not make sense, let alone writings that were in very different times. Throwing these sort of passages in is a useful notion if the objective is deep discussion, but some people do it as a cheap trick to win debating points, and that has nothing to do with deeper truth.
It's admirable to aspire to know more and more. It is wise to apply logic. But in my view it is also wise to assume you do not (and cannot) know the whole truth. Which is why there is the need for faith, as we discussed in another thread. It's also wise to recognise that your thoughts are constrained by your cultural blinkers.
Let me throw you an example. What so you think of arranged marriage? How does that fit with your ethos? What changes if you assume marriage because you were told to takes the place of marriage because you were in love? Is it barbaric and cruel, or just different?