Unfortunately there are people your age who perceive 'harmless fun' as being something a little more offensive than running around the streets in fancy dress and knocking on people's doors and asking for a few sweets. These are the ones people remember and who spoil it for the rest of you. They are the ones who, a few years ago, vandalised my hard-earned car, smashing the number plate, using a shard of it to gouge a deep scrawl on the bonnet and then wrecking the door lock with a screwdriver - and that was before they covered it in spray paint.
If you turned up at my door with five of your friends, I wouldn't feel threatened because a) I tend to like - and get along with - teenagers, b) I have a very protective dog who would have you back up that garden path before you could say "tr_", and c) I keep a water pistol handy in order to play my own tricks.
But to many adults, and especially the older generation, the trick or treat custom is one with which they are not at all familiar. It didn't exist when they and their kids were your age. Now they're older, they're out of touch and they don't understand these things, even though it's something we, as a society, are familiar with. They went to Hallowe'en parties, dunked for apples and told a few ghost stories and that was the extent of their fun. To have a small group of teenagers turn up on your doorstep saying, "give us some sweets or we'll play a trick on you" can be very frightening when you're 70-odd and you know that if you fell over, you couldn't get up again.
(contd)