Actually it was very pleasant to meet in person a number of people who previously had only been voices on conference calls or names on-screen. That's what I get for being a member of a social species, I guess. However, I'm enough of an introvert that being around strange people in a strange place all day became somewhat abrasive feeling, and all I wanted to do was go home - and barring that, back to my hotel room to sleep.
I don't know if it's because the novelty of travel has worn off some, or if I'm going through a phase, or if this is some delightful new manifestation of my mental condition - which I've come to view as somewhat akin to an air bubble under the linoleum: you smooth it out over here, it pops up over there. Too bad pushing the analogy further is unproductive...