I had no idea parents didn't kiss their kids on the lips! I just assumed. To me, it's the most natural thing in the world. My son runs across the room when I pick him up from school, jumps into my arms, and -- lipstick be damned -- goes right in for a kiss. What am I supposed to do? Turn my cheek like I would on a date gone bad? He's my baby.
My feeling about interviews with artists and bands is that these are people who you are inviting into your virtual house and they should be shown respect based on their being your guests. I believe it doesn't mean you have to agree with what they say or even endorse it, but it does mean civility should be the course.