DGS wrote:
Another thing that left a bad taste in my mouth. After the flight was
over and we'd taxied back to the hanger he was climbing out of the
plane and realized he didn't have his seatbelt fastened. He laughed
about the fact that he had forgotten to do so. As I then followed him
out of the plane I realized that I hadn't had mine fastened either. He
then apologized for forgetting to have either of us do so, but I could
tell that it didn't really bother him. I dunno, I guess it's not a
big deal, but I really kind of want someone who maybe takes it all a
little more seriously.

He was in violation of FAR 91.107 "Use of safety belts, shoulder harnesses,
and child restraint systems":

http://ecfr.gpoaccess.gov/cgi/t/text....2.4.4&idno=14

Were I in your position I'd look to using another instructor.