What I find even more disturbing is that the OP completely refuses to acknowledge the fact that he has continually CHOSEN to keep making these dark side choices.
I do not see the use of the shock collar on Vette as being sexualized in the least. In the context of the game, it's torture for the sake of torture.
OP, YOU made the choice to keep the collar on Vette. YOU made the choice to continue torturing her, and YOU made the choice to keep her in slavery. You do realize that you had the option to remove the collar and treat her as an equal, don't you?
It seems to me that you're at odds with yourself over making those decisions and are now trying to lay the blame on BioWare for having those options in the game. YOU own those decision, not BioWare.
If you can't deal with the choices you've made in the game, you have three options... Roll a new character on the Republic side, roll a new Imperial and choose light side options, or simply move on to a different game. Whichever you choose, however, you need to stop blaming others for your choices.