I've been a ski instructor.  I enjoy the teaching aspects of it, including helping kids learn to love the sport, and finding innovative ways to see how people learn and adapt instruction for them.  But you do end up spending A LOT of time on the bunny hill, so you have to be OK with that.  On a "good" day you might get to take someone out on intermediate runs, but on other days you might end up spending the whole time on the kiddie rope tow, picking kids up.  You need to be a person who can do that all day and still stay patient and smiling.