I've got some really, really, REALLY bad news for you.
If you think flight instructing is boring, then an airliner cockpit is going to send you to an early grave. You'd better go and start applying for crop dusting positions, because that'll keep you alert and awake.
Domestic: Sit in your dark closet at home and change frequencies every six minutes.
International: Sit in your dark closet at home, change frequencies every two hours, eat on your lap, wonder what the big deal about "Angry Birds" is.
In retrospect, some of the best years of my flying career was watching that student shoot his first ILS to minimums or watching him make his very first solo pattern.