Yes, in terms of feeding me a line that I was progressing and making me feel good about things.
And possibly a little in terms of teaching as a calling, for enjoyment, etc. I heard one teacher calculating who was paying for their cable tv and wife's jewelry once. You teach one student once a week and your tv is paid for for a month. Everyone has to make a living, but I don't buy that all the teachers are out there for the sheer enjoyment, etc. I've heard a lot say they would teach for free (and I've seen some teach for very little), but I haven't seen many teachers actually teaching for free and really investing themselves in teaching.
I have heard one person at a conference saying it can be both -- both in it for the money and for the enjoyment. If you're teaching, you're still around music and do still get something out of that experience yourself while being paid for it. I do remember that one speaker though -- There can be a bit of a greed, which is ok if you're improving at things, and part of it is practicality -- You're not going to be able to invest in more resources, etc. if you don't charge. That sounded pretty honest and suave in terms of being businesslike but without smearing on a line of "I love teaching so much I'd do it for free!" I've noticed school teachers who said that who never show up at school again... unless they're paid.