This thread is one of the big reasons I like this forum, a topic of obvious interest with multiple well reasoned viewpoints. As Art says, the hobby has grown and shrunk many times over the last half century yet it is still here and seems to be thriving if you judge by new and re- releases. I can relate to being teased about playing with "toy cars", hence I don't spend much time passing out leaflets at the airport . I see cool things ahead with the advent of scanner and 3D printing technology taking us places we haven't even thought of yet.