See this is my point. I have no issue with contingent determinism - If I want to travel from A-C I have to select at least one way of getting there. Similary, there are always immediately contingent environmental factors determining what I do.
What I find monstrous is the idea that this chain of causal events could, with enough information, be traced back to the Big Bang or whatever moment of creation of time and this reality you prefer. For me this is what determinism means - fate, destiny, whatever you want to call it. The idea that I have no influence over the events of my existance, that I'm essentially living a life that I exert no control over.
I mean if you're happy accepting that level of passivity fine, but I think it's ultimately a cop-out - why bother with morality if your choices are already preset, regardless of the morals you choose to have (e.g. I abhor violence and would never do it to someone, however this contingent determinism would have it that at some point I may violate that personally chosen moral, and then I can justify it by saying 'Well, it was predetermined that I would do that, even tho it goes against my moral precepts.')