A HELLUVA LOT of people, which is obvious when reading even a smattering of posts on these forums.
Yeah? Who? The least common denominators who post stupid questions like 'What is a TG?" or " Why do trunks have multiple frequencies? " in spite of the wiki article on this site, that does a nice job of explaining trunking? BooHoo. Reading is fundamental.
I wasn't born with the knowledge to program a scanner.