It means everything. The life altering circumstance brought about by child rearing are cause for the gov protections of legal marriage.
No it's not.
None of the rights and privileges have anything to do with child rearing. They are all about recognizing, and protecting people who are committed to spending their lives together. Procreation has nothing to do with it. The fact is there are many many things that homosexual couples are not allowed to do, simply because repressive bigots keep wanting to dismiss them because they don't happen to like their lifestyle.
You're full of lefty conditioning, aren't you? I don't care if homos want to figuratively marry or do whatever they want to do -- in
private. That's real tolerance, not bigotry. Using the gov to force others to acquiesce to and grant privileges, including the counterproductive and potentially harmful privilege of adoption, in the name of that personal behavior choice, is extremely
intolerant and
bigoted. You have the shoe planted squarely on the wrong foot.