These days, to find new music that's actually any good, you have to look really hard, and everything that isn't mainstream has really veered off into very different directions (meaning any given artist/subgenre probably won't appeal to you). It isn't like the "old days" when the mainstream music was actually good. There's a reason all those rockers from the 70s and 80s (and some 60s!) are still touring.
Ask the kids what they think about today's mainstream music. They will say it's amazing. Who do you think drives the charts?
Yes, yes, I know, you are or you know a couple youngsters who think anything newer than Pink Floyd is shit. And you think that the charts are not organic, they are "marketing", where the record label pay to get entry and rank.
This for example: http://www.hawaiianreggae.org/artists
Nice and mellow, lots of young new artists. It's a pretty good scene.