Some interesting stories, but most passengers are obviously 'normal' folks. Or at least not more derailled than the pilots hauling them along!
I love taking people if they are genuinely keen but flown enough folks around that just wanted to have a go so they can have the tick in the box.
As for kids, they are usually fine. The youngest I have taken any of mine was 5 months and that was just for a quick circuit to see that all was well (think mum was more worried about how nipper would be than nipper)
Make sure that they are safely restrained in a car seat or something of that ilk and if possible make them wear a headset (a proper one so that you can talk to them - funny concept for them so be ready for some funny questions)
One of my best moments so far was taking my then 2,5 year old up in the Condor and fly for a BBQ to Bourn. Singing all the way there and after landing she said: 'That was super' Snuggled up on the way back soundly asleep after T/O.
Will never forget those moments.
Have fun!
FD