Well, I like sitting in row A. I sit in 1A and my husband sits in 2A. I like this because row A is so private since there is a "wall" accross from you.
Also, my husband tends to bother me on long haul flights. He talks when I want to watch a movie, he talks when I want to sleep, and i can never get any peace and quiet. So picking seats in row A is fantastic for me, because it's a great excuse for him to leave me alone. Don't get me wrong, I love my husband, but I'm used to flying solo and when I got married I take him everywhere and it's something i'm still adjusting to.