"Whenever you find yourself on the side of the majority, it is time to pause and reflect. (Mark Twain, ~150 years ago)"
That seems to be exactly what hota_mazi is saying.
Mark Twain's quote is also often misunderstood. It doesn't mean you should never be in the majority, it's about always questioning your choices.
Personally, I go one step further and I always pause and reflect, whether I'm in the majority or not.