My friend and I got into VK bands in like 2007/2008 and It's been all I've listened to since then. I just can't get into what's popular with everyone else and what's played on the radio. In 2010, my friend totally fell off from the scene and I don't know why. I think he said "It's dead." and I was like "Oh. Same." This kinda affected our friendship because a majority of the time that we'd talk, it would be sharing music with each other. Maybe he was never really into it as much as I thought he was?
In regards to my parents, they don't say anything. It's constantly playing throughout the house and in my car and my dad actually taps his foot to the beat of some songs. For awhile though, I was scared to let them know that I listen to Japanese music, but over time I was like "fuck it, Y0LO" because why should you have to hide what you like from your parents? My dad actually told me that he liked the song Zero Crysis by DaizyStripper. LOL
I'm in the process of converting 2 others right now. One friend who listens to VK bands occasionally and one friend who pretty much only listens to anime OSTs and knows about the songs because they're anime OP/EDs. Maybe in time they'll join me....