I tend towards tradition more than innovation these days, I think a reflective conservatism is good when it comes to the memory which rules reflect, call it preserving if conservatism seems too politically partisan.
I'm not sure that "allow" is the proper way to look at the topic of "same sex marriage", that's not permissable, its not within the gift of society or, properly understood, the state, to do that or it should not be. People are going to live as they always have, think as they always have, perhaps radical actions like this will provoke ill feeling which never existed before and will only serve to alienate or build antagonism towards those it is intended to benefit. Its not going to prove satisfactory to its advocates, it sure wont to its detractors and it will serve to deepen divisions not mend fences and build bridges or dispel bigotry, never mind more radical goals like social acceptance, spreading or popularising homosexuality or compensate for earlier familial rejection which I personally believe is the real, personal, driver behind that sort of political campaign.
I've no problem at all with anyone believing they can or will or should improve upon the past, who would? That's something no one would reject right?
Well, anything which seems like there's no reason at all to have second thoughts or caution about should be the exact thing to be cautious about, history is full of those sorts of "great ideas" and the suffering which they caused, hindsight is twenty, twenty but foresight isnt.
Questioning is fine but more often than not people are just dismissing anything which doesnt fit with what they imagine can only be a good thing. Avoidable suffering ensues. And that's the worst sort of suffering.