Hey Ward. Great post and one that many question that's for sure. I think alot of CSA survivors struggle with this to one degree or another.
I was abused by both males and females. No pun intended but I got it from both ends. Oh, who am I bullshiting, pun intended.
I tried to be straight and it just doesn't work for me. I'm not really bi either but do have a little OSA (Opposite Sexual Attraction) however it is quite minor and doesn't happen very often.
Looking back on my childhood I certainly had far more sexual attraction to the same sex and acted on that far more than not.
I believe my CSA has affected my relationships in general, not my sexual orientation. I have looked at this in depth over the last 20+ years and that is where I stand at this time. I am really convinced that I would be gay whether there was CSA or not. At the end of the day, I have to be where I feel most comfortable, no matter if CSA is the cause or not.