Do I buy each scenario out of my own pockets ? Yep.
Do I take the time to prep for my games ahead of time ? Yep.
Do I try to make the game fun to everyone at the table, including myself ? Yep.
Do I want to be quizzed or evaluated on all that stuff I do for free ?
HELL NO!
The day I'm evaluated on a hobby that I'm not paid to do is the day I'll look for a new hobby.
That is all I have to say.
EDIT: ... not quite: The fact that people are actually asking me to DM games for them is all the "evaluation" I need.
