think about it on the flipside... imagine ALWAYS being in the mood for fun... imagine trying to have fun in EVERYTHING you do. Sometimes it can be inconvenient considering that you have to get things done too. Like run errands, go to work, go to funerals, appointments, doing paperwork, cleaning, sitting in lectures. And you feel that you must try to turn them all into a big exciting party.
(Not that I experience this or anything...... )