Appealing to the majority is lame.
There's three options on every stance: support, oppose, and neutral. When in doubt, you should be neutral - not opposed.
Just because everyone else is opposing gay marriage, or integration, or emancipation, doesn't mean you should.
Maybe you don't have the time or energy to try to find out what path you should take. Okay, fair. You can always do nothing. You can literally say "I don't know enough about this to have an opinion".
But following the majority IS NOT that. You ARE taking a hard stance if you do that! You're making a choice, and that means you better understand that choice. You are responsible for it, accountable to it!