It is far better to offend people by politely refusing to participate than to offend God by blindly following the trend... God has called us to greater purity by coming back to our faith in Jesus Christ and loving Him while accepting the Truth of His Word.
...letting seemingly harmless symbols or practices take place in our lives will eventually become central in our lives over God. Idolatry is detestable to God and will become our downfall, much like what happened to Israel.