I'm really nosy, i even brush my teeth whilst looking out of the bedroom window!
This has been of benefit though to some passers by, as I've found a drunk woman sprawled across my drive, with the contents of her purse everywhere, we had to call an ambulance as we could not wake her and it was freezing temperatures, another drunk person curled up on the pavement across the road from us and i sent hubby out to check he was ok, the man then got up and stumbled off (hopefully) home.
I have also protected a teenager from bullies as they circled him and all 5 foot of me yelled at the bullies to **** off and leave him alone, i called them cowards as they were 4 - 1, they soon got on their bikes and left!
So in a nutshell, yes i'm nosy, but i also see this as a public service i'm offering