I've been a music leader for most of my life. I started leading at my church when I was about 16 and have lead music ever since. As such I have seen this particular issue become a real sticking point in different churches in which I have served. We argue over the style, the volume, the instrumentation, etc. The discussion is rarely about the gospel and almost always a question of personal preference. Culture. Usually the cultural leanings of one generation vs. the cultural leanings of another.
If the Lord allows I will one day be old enough to dislike the music at church. It's inevitable. I already find myself disliking some of the music I hear on the radio and it's only a matter of time until those styles influence the music in the church. That's not evil, it's just the natural progression of time. I was influenced by certain songs, bands, and sounds as a kid and my kids will be the same. We should use those influences to communicate the gospel to others who are acculturated in the same way.
So, I say all that to say this. I hope that when I do begin to 'hate' the music at church I will see past style and look for the gospel. That my contention will always be that Christ be glorified.