Gary ... I don't know where you are referring to when you say 'around here', but I am pretty sure that if you took a weekend tour of popular catering halls and hotel ballrooms where there are weddings and major functions going on, you will see more DJs than bands.
I've said this SO many times before: The problem is that the culture has changed and the vast majority of young people (from teenagers to 40 somethings) want to hear the song played EXACTLY like the original recording. That can only be accomplished by a fairly large band - 8 to 10 pieces or more, including vocalists, OR by hiring a DJ ... it's unfortunate for good musicians, but such is the case ...