It was disheartening once upon a time, since I didn't start out as a skeptic, it kinda happened overtime. Nowadays I find debunkings to be both amusing and enlightening, rather than something to bring myself down over. As for encounters, hm...there have been ones that have stumped me, but I don't think I can remember any off the top of my head at the moment? Although I am interested in cryptozoology its been pushed a little to the back by all the other stuff going on in my life in recent years which means that specific examples escape me at the moment.