Same with me. Katy's 12 years older than me and all my other faves are older. But Lorde is a few months younger and I have a lot of respect for her and what she's doing at this age.
MJ was the same age as my mother, as is Madonna. Janet is older. Mariah is older. Bey is 9 years older than I am.
I like Lorde even though she's a teenager. It's not really about age, but about the music and image. I could never stan for Katy Perry. Take Legendary Lovers for instance, great song, now imagine if it got a Katy Perry-like video. Her visuals take away so much from the song. If that's how she sees her music, I can't even take her seriously.