Why is it that I'm finding duets more and more appealing?

And they're making duets with people I would NEVER expect to be perfect together!

Jonghyun & Taeyeon's "Breath"

Chen & Krystal's "When I Was... When U Were"

Jonghyun & Juniel's "Love Falls"

Woohyun & Key's "Delicious"

Daeyoon and Yerim's "Number 1"

(I know there are more out there. These are just my personal faves.)

WHY CAN'T THEY MAKE MORE AWESOME DUETS LIKE THESE?!