Come on, guys. Be realistic about your abilities. Compare your hours of experience flying aircraft with your hours of experience driving a car. When you are a qualified instructor with a current medical as certified by an AME, then you can fly with consenting adults. Taking other people's children up for a jolly because you've got a PPL and 200 hours ..... and then not resisting the impulse to show off is absolutely horrifying.
But I'm just an old granny glider pilot, retired instructor with 1,800 hours in gliders, 3 diamonds, and 1,400 hours in light aircraft, IR, etc., and 18 grandchildren. I took my own grandchildren for a ride, and being up in the air was quite sufficient for their delight.
OK, so where do you draw the line? Are you really suggesting that the experience you claim to have should be the minimum?
As a former glider pilot a frequent gripe I heard was the lack of a formal licence made it unclear whether you had the "right" to take somebody for a ride. Our club had its own passenger carrying rating (I had one) but I get the impression you would consider that to be woefully inadequate.
Equally is somebody with an ATPL and thousands of hours in 747s but only minimal hours in a Cessna really any safer taking their friend's kid for a joyride from the local farm strip?