I'm a total pervert because I really enjoy tutoring. I now get to do it very rarely, and usually only pro bono, but I enjoy it every time for the same reasons you mention. And I'm so glad for your students!

And at least what you produced in your lab may have been putrid, but it was visible. Half of the stuff I deal with not only isn't an actual, three-dimensional solid - it doesn't even have a positive number of dimensions!