Hey there, I really am not trying to get into a debate, just sharing thoughts, but to answer your question, I believe in a civil union that has all the rights that marriage does, but marriage retains the traditional meaning that it's held for centuries or more. I explain this in the post above, but no tangible limitations would be put on gay couples in a civil union. They can adopt, they can commit, they can have a ceremony, etc. The only difference is the title of the paper in their filing cabinet. So I don't feel like conservation of the definition of marriage is telling them what they can do with their life. They still have full freedom to do anything, ceremony and all, ring and all.
But like I mention in the post above, I completely understand why they want the word marriage.