yeah, I started listening to Japanese music because I noticed that you can have a pop song but they are well structured and talented. For example Gackt, and the bass on songs like Seki Rey or Mizerable.
Also, that's not the only reason I hear Japanese music. I found my favorite band called Envy (a more underground band) who use to be Hardcore and now it introduced post rock to its songs. A band totally different from what I have found in any other country. It's sound can be compared to Explosions in the Sky or Mono, but with screams and all their songs with a simple formula but very effective that leads to and ascending climax.
YouTube - Envy - A Warm Room
So in conclusion, In Japan I found even mainstream music very well done, compared to music in USA and Mexico. Though of all the music I hear probably only 30% is in Japanese and 70% english and 0% spanish (Mexican music sux so hard).
And yeah, I don't mind to tell other people that I hear Japanese music because all the above stated and more.