I have no problem if 2 dudes want to get married. But I still have problems with this decision. The constitution doesn't say anything about marriage IMO. That is beyond it's scope, as they say.
That being said, we have two choices:
1) Overturn the decision. This is bad. We should not break precedent IMO. Doing so sets up a back and forth where once you get a conservative majority they overturn all the liberal court's opinions, then 10 years later you get a liberal majority they overturn all the conservative opinions. And so on and so forth. Judicial precedent is a good thing
2) A constitutional amendment that says marriage is to be left up to the states.
Look if you cannot get #2 then you don't have any support for your decision anyway. Either drop it, or try to convince people of the merits of your beliefs. Either way, a presidential candidate does not need to be involved in the discussion whatsoever, since they actually aren't involved in the amendment process IIRC.
Lets concentrate on things that matter, IMO.