I found them weak and tenuous the first 1000 times, and will continue to do so.The archives are legion on this subject, as you can see browsing the EP sub forum. Two recent threads from each side of the question are:
[URL]http://www.puritanboard.com/f1...ing-uninspired-song-use-public-worship-46680/[/url]
and
[URL]http://www.puritanboard.com/f1...onfine-song-public-worship-psalms-only-48481/[/url]
If there is any interest I can reopen either of these for posting.
Chris is right; this subject has been discussed more times that I care to count, but it is no different than many objections you hear from non-believers regarding the Gospel. Even though you have heard them 1000 times, it is assured that you will hear them 1001, 1002, and so on.
I hope that these three points are helpful.