I wish I had been able to get in on this sooner.
Some points I have about USBM.
1.) It's an active scene that can actually be followed from day to day. I love the second wave bands as much as anybody, but they're all done. There's nothing new coming out of there. Arcturus and DHG? No thanks. With the US scene, many of the bands are active and releasing material quite regularly. I enjoy following how bands progress and how their music changes. Being in the US, it's easier to keep track of such things, considering interviews and information is always in English.
2.) I know people involved with bands here and people that run labels. I find it personally relevant to follow bands from here for building my band's own career.
3.) Hubster's theory of scene patriotism doesn't carry much weight to me. Consider ANUS, based in the US, which doesn't cut US bands any slack at all.
4.) The most important point I wanted to make: The US scene has more potential that any other. History has shown that great metal comes from lots of bands in close proximity that competed for greatness and shared members, i.e. Bay Area, Florida, Norway, Gothenburg. Geography has largely kept this from happening up until recently, and I think in a few years we'll see some of the rewards. A project like Twilight, now with Aaron Turner of Isis in the fold could be something like we've never heard before. A lot of the key figures are in contact, and this can only be a good thing. I think a lot of the bands are just starting to come into their own, and the best material is on the way.
5.) Xasthur is like an old friend to me. Yes, I know that every Xasthur release sounds (musically) the same. I don't really care. I like the familiarity, and the atmosphere works for me.
6.) The bands that are really ideologically driven aren't my favorites for the most part. Consider Averse Sefira, Weakling, Wolves in the Throne Room. These are the most ideological, and most pretentious of the US bands. How people can laud pretentious crap like Weakling and dislike the most down to earth bands like Nachtmystium or Xasthur is confusing. If you think about it, few people treat their fans better than Malefic. He releases just about everything he records, because he knows there's demand for it. Releases are prompt and frequent, and he delivers the goods to fans time and again.
I guess that's enough for now.