Should teenagers go trick-or-treating?

With Halloween only around the corner, the age old question comes up in daily conversation between kids around the globe: "Are you going trick-or-treating this year?". And although the answer is almost always yes in people under the age of thirteen, the question becomes more and more disregarded as they move up in the years. Being sixteen years old, the question that I've been asking and that I've heard been asked more and more is: "Will we even be allowed to go trick-or-treating this year?". All across North America, adults have been starting to actually turn away teenagers that have just been trying to spend their October 31st evening going around door-to-door rather than going to the parties. They'd rather have fun by getting candy rather than getting drunk and I find that it's disgusting that people turn them away. I feel as if anyone under the age of 19, which in Canada is the legal age for adulthood, should be able to freely go trick-or-treating. I feel as if it is unfair and immature that some adults within the community would turn them away.