akuperma – On a few of your points… Point 2), whilst it is technically true, the ‘some’ you mention is a miuta d’miuta. Pretty much everything written after 1550 or so (generally regarded as the beginning of the Classical era) is completely secular in nature. Granted, Handel did put out a lot of religious stuff but he out out a lot anyway. Yes, most of the Baroque and early Classical composers wrote one or two religious pieces but there were by no means any kind of majority. After the early Classical composers (so from about 1800) it is extremely rare to find any specific Church-music (with the exception of Faure and some of the current crop such as John Rutter).
On your point 3). I’m not quite sure why you refer to Zionists, plenty of teshuvos have been written on why it is muttar to listen to music today (R’ Moshe alone wrote 3). Even before then, what would the hetter have been for Chassidishe Niggunim? It seems quite obvious that people have been listening music outside of Seudos Mitzva for hundreds of years.
Loyal Jew – Learn something about classical music before making sweeping comments. See above response to akuperma for more details.