As someone who always comes back from a flight with a cold or a sniffle, I must admit I am in no hurry to fly again.
Speaking of seating on planes, must pass on a story. A few years ago I was booked on a Continental flight to Atlanta, the queue for check in was huge. In front of me was an american man and we got talking, I have to say that the man was enormous, over 6'6" and best part of 400 pounds. He got to the check in and they made him pay for 2 seats, he agreed, I think out of respect for whoever he sat next to.
I saw him on the plane and someone was sat next to him (almost under him), I asked him what about the second seat, he said 'Yeah, its the other side of the aisle'.