Well, everything in most constitutions is subject to a "reasonable" limit. For example, sure we can have religious freedom, but sharia law, child brides and polygamy aren't within a reasonable limit.
Is same-sex marriage with a reasonable limit? IMO, absolutely. There's no valid reason for its prohibition and as many valid reasons for it as there are for heterosexual marriage. The most important one IMO is the fact that there is over 275,000 children in this country whom are in the care and custody of same sex couples. There is absolutely no evidence from a credible psychological or psychiatric organization to support the belief(s) that two loving individuals of the same persuasion are any better or worse at bringing up a child then two loving individuals in a heterosexual relationship. These 275,000 kids’ social well beings are being compromised however, by the idiots who voted for prop 8. To the idiots, all I have to say is, Imagine if the government had come out, (supported by 52% of the electorate who had absolutely no idea of what in the **** they were talking about or were complete sociopaths/republican leaders), claiming that your family was somehow abnormal, that the love your parents felt for each other was somehow less than that of theirs, your family was on a lower level, you were 2nd class citizens and you’d be treated as such, even when you knew there was no factual basis to support such lunacy.
Don’t blame conservatives though. Conservatism, genuine conservatism, isn’t what is represented by the republican and tea parties of today. The people in those parties are fascists given that they want to impose their views on you even when its against the common good. The neo con agenda is way more of a danger to this country then the mythical “gay agenda.”