I've also done the same. Introduced maybe 4 or 5 guys & a gal, too. Only one of them continues to smoke his MM cob I gave him.Yeah, it’s a crapshoot for sure!
As a matter of fact, a couple of other guys have recently expressed an interest in pipe smoking, both of whom I let try my pipe, on separate occasions. Both appeared to be pleasantly surprised, I don't have more MM cobs to donate to anybody, so will need to do some buying....