Amava - I agree with you. That attitude often goes hand in hand with "insert geeky type thing" is childish and you should give it up and give it to the children because you need to grow up.
My BIL is still pissed that he was made to give all his legos to my DH when they were children.
If BIL & DH have the right kind of tongue-in-cheek relationship
, DH should buy BIL a GREAT BIG Lego set for an appropriate occasion sometime. :-)