Here's a point of view from a fixed-wing pilot and heli newbie ...
Having flown and taught thousands of hours professionally, I believe that there's nothing wrong with the occasional "insanity" (or whatever you wanna call it) - as long as it is safe. Last year, I couldn't resist chasing boats at 50 ft agl in the Chesapeake bay in a A75N1 (Stearman). Yep, I didn't maintain my 500 ft obstacle clearance but maintained my common sense for some fun.
P.S. atb1943, not to forget the tragic accident of the Luftwaffe Huey (?) that killed a couple of joyriders a few years ago. Bottom line: Judge your adrenalin...
