....I like sitting down. Sitting down is ace, and less work than standing. I generally don't like to stand, and if I am I much prefer to lean onto something but I digress.
Sitting down is far more elegant and civilised, so why wouldn't one want to travel sitting down. And as far as I can see there are two instances where sitting down would not be favourable. One, where the mechanism for sitting down is disrepair, (e.g. saddle sores) or two, when ones view is restricted by the act of sitting down. Pedaling whilst sitting down is an inconvienence I admit, but sitting down with the wind through your hair and the world whizzing by is well worth it. It's one of the reasons why I like cycling so much. The sitting down is marvelous. And who doesn't want a seat?