I can't help you if you don't see how baking a wedding cake for a same sex couple might be morally and religiously objectionable to someone. To do so may imply some sort of sanction of something that is in direct violation of a persons religious beliefs. I know I would never participate in or even attend such a farce and thankfully my business won't be impacted. But other's are and you want to force them to participate in something they don't believe is right. What gives you the right?
As for churches not being forced to hold same sex weddings, how much do you want to bet the gay mafia will want to force that as well? You don't get their agenda. They don't want tolerance, they want to force their beliefs on others using the power of government. They want to criminalize opposition to their lifestyle choices. All this perversion and ruining people's lives and livelihood over 2% of the population.