Phil, I'd argue you're far more aware of your surroundings than not just the average person, but the majority of the spectrum.
In seriousness, guests are usually concerned by restraints between clicks. You see it a lot watching colossus, because it has a LOT of give between the clicks and with the restraint being so long and bulky, it looks like it can move more than it can.
I've seen a mother panic so much on that Ghoster Coaster thing (or whatever it's now called) at Kings Dominion they she screamed until they stopped her on the lift and an attendant had to physically go and show her that everyones bar is the same distance from them and moves the same amount and that it's perfectly normal. It has old buz bar things with one position they lock into.
I think, as well, a lot of guests kick up a fuss when they aren't actually concerned at all. In the 10 years I've been going to parks regularly (and the 2 years I've worked at one), I have NEVER seen anyone want to get off or refuse to ride or even show panic, except that one woman at Kings Dominion. Plenty of people complain about lapbars being too tight or not being able to breath, too - but when faced with the option of riding as is or not being able to ride, suddenly they can breath. People exaggerate. They know deep down these things are safe, and I'd even argue they think they are safer than they are in the logical portion of their brain, demonstrated by sheer stupidity in their actions in situations where it's actually not safe at all to obvious degrees. Oh, and the amount of people who pull a bar down, realise they need to do something, and try and push it up. And I'm like just like... ? You panic when you first sit down and it wont lock down, and the reason it won't yet is to prevent you from pulling it down before your friend has sat, or before you've put your bag in the correct place or whatever. But you also panic when it won't raise? I don't get it. People can't be so stupid as to not realise theres a window when they need to board and in that window the RESTRAINTS HAVE TO BE UP otherwise THEY CANT GET IN THEM. People think the world revolves around them, and only them.