Man will be natural by nature until he transcends the natural. And because of his fallen state, what we call the natural man is decidedly unnatural. Only when we are unified in Christ will we speak with one voice and share one heart; His. Until then, 'a matter of taste' and 'mine is better than yours' is a moot argument.
Concerning the phrase 'everything is relative', I am forced to ask- relative to What? What if some things we deem of great importance are ultimately revealed as equally irrelevant? Our priorities must first be straight before we get into disputing something as petty as taste, and its bases in right and wrong, or better and worse- and again, at the point, will it still matter?
"Think not that I am come to send peace on earth: I came not to send peace, but a sword." Matthew 10:32 KJV. Even Caiaphas by virtue of being high priest that year prophesied concerning Jesus' mission. Truth, the foundation of everything testifies of Christ; how can we help but speak truth, even if it ends up in a twisted form? Even CS Lewis pointed out that Evil is only spoiled goodness, and thus cannot even be honest about being evil.
Silence