After having mirror-image careers for so many seasons, there's finally no comparison.
I grew up an only child. My parents had me when they were in their late-30s, so there wasn't ever much chance of me having a sibling. I always thought it would have been cool to have a brother. Whether older or younger, the idea of having another kid in the house to play with always appealed to me.
Although I never had a brother by relation, I had the next best thing. By the time I was old enough to walk, one of the kids that lived up the street from me, who was 8 years older, named Scott, decided to come play with me and make sure I had at least one friend.