I think a lot of the time they see us as like an 'informal' business, where everything is negotiable. And they think they are special and we will change our schedules just for them.
I've even had punters quiz me as to WHY I can't work evenings and tell me how ridiculous it is that I don't, because 'all the men are working' during the day and I'd get more business. It's like they can't wrap their tiny minds around the fact that we have families and lives away from this.
( I know I sound really angry and anti-client lately lol, I'm really not, it's just PMS week and the timewasters have been out in force!)