Mazzy1026,
I'm part of that group who loves teaching but I'm doing it to built time. So, don't forget that there are instructors out there who love it and do it for hour building also.
As an airline job, it WILL become routine sooner or later. Sometimes I'm getting tired of doing circuits over and over again with some lazy students. Good students are going very fast through the training and finish in a short period of time, so I don't really have time to enjoy them ... Sometimes I'm getting tired of flying the same old crap airplanes with always something not working properly and making no money.
It really depends on the lifestyle that you are looking for. If you want to be home every night and fly only out of your local airport then go for instructor. If you want to see the world, make descent money and don't mind being away from home as well as fly more sophisticated machines than a PA28 or C152, then go for the airlines ...
good luck anyway,
