I usually have a hard time for overy political music (allthough I do dig Megadeth of course and they can be political at times). National socialism is no exception. I also don really want to get into Rage aganst the machine because of their leftist lyrics (allthough they get a good nice groove alot of the time).
And about NSBM we all know its about shockvalue. Now that Satanic bands can sell loads of records they just want something more shocking.
But then again, as I've said before, I am one who does care about the lyrics. I cant look past them since they are a big part of the music itself so if I dont like the lyrics it brngs the whole album down for me.