I think alot of (normal) people are nostalgic about arcade games and would love to chat about their memories and experiences. But when they hear that I went so far as to build an entire cabinet, they kinda want to back away slowly without breaking eye contact.
On the other hand, the regular geeks (I'm in IT) love to talk about this stuff and wish they had the drive, time, skill, and desire to build, restore, or buy something.
-pmc