Is it? We constantly improve our knowledge and understanding. I don't think it's a stretch to say we don't want invalid ideas (like "homeopathy cures diseases") being accepted as true.

Perhaps my phrasing was off - I didn't mean to imply that other ideas shouldn't exist, just that they should not be accepted as true, nor should every issue be two-sided and seek a balance.

Even so, if we could all agree on basic axioms and goals, I don't think it's too far-fetched to say we'd all like to arrive at correct ideas.