No, it doesn't legitimately affect the parent/child relationship unless people like you teach your children or other children that there is something wrong with kids who are raised by same sex parents. But if you are talking about the other children, too bad. They need to learn to accept that people are different, despite what their parents or their church/religion may be pushing them toward.
"A woman is like a teabag, you never know how strong she is until she gets in hot water." - Eleanor Roosevelt
Keep your religion out of other people's marriages.
Scenario: The best baker/photographer/caterer in town is a Christian. He/she no longer does weddings because of this crap, but his/her work is still highly prized.
What are you going to do, force him to serve you?
2.) not doing wedding cakes is perfectly legal, doesnt break the law nor infringe on the rights of others
3.) cant force them to serve you just like they cant be forced to serve now.
do you understand the law and rights? you scenario has nothing to do with illegal discrimination and rights violations.