Peapod,
Let me get this straight. Your pro-abortion but believe life begins at conception. So you personally believe that abortion kills human beings. Is that what you said???
As for imposing beliefs, both sides are trying to impose their beliefs onto the other but the SSM proponents are so closed that they fail to recognize that.
If you believe in personal choice with regards to everyone's life, then there shouldn't be any illegal drugs, relationships, lack of education, slavery(pimping), .... If people want to get into a situation that is detrimental to them it is their choice.
As I've said in other threads, the thing that bugs me the most is people that are inconsistent with their beliefs. So you either believe in personal freedom of choice or you don't. I personally believe that society needs to protect people from themselves in certain situations(abortion(kills innocent), illegal drugs(kill innocent and causes crime), etc)