mathanxiety so if it’s not created by the retail industry, why are you and others putting up decorations two weeks early?
It seriously wasn't created by the retail industry, if that's the point you are trying to make.
Hallowe'en isn't a Hallmark Holiday like Secretaries Day or some such nonsense. It goes back thousands of years, with traditions added and cast off over the millennia, most notably the superimposing of Christian belief and practices.
In latter years Trick or Treating has taken hold alongside others. As a child we traipsed from house to house in our costumes and masks looking for apples and nuts, then the neighbourhood gathered around a massive bonfire. Traditions develop from earlier traditions - Hallowe'en used to feature nocturnal mischief and leaving out food offerings for the spirits of the dead, and it's fairly easy to see how trick or treating eventually developed into the form we know today. I have fond memories of Hallowe'en parties, bobbing for apples, making masks in Art class in school. There are fireworks in Dublin now (they used to be banned in Ireland).
When I was a child in Dublin the neighbourhood kids used to go around looking for dry branches and hedge clippings, and bits of old lumber to build a whopping bonfire in the local green space beginning a couple of weeks ahead of the event. Should they have waited until the 30th of October, very possibly the rainiest day of the year, possibly a school day, to get this organised, on the basis that it is somehow unseemly to have any sort of display up until the actual day? Should I wait until the day itself to make barm brack? I normally make it the weekend before Hallowe'en.
Millions and millions of Irish people celebrate Hallowe'en, both traditionally and 'secularly'. I go to Mass on the feast of All Saints. That is my observation of the holiday itself seen to, and I also give out candy to trick or treaters. I put up Hallowe'en decorations when I can, before Hallowe'en.
This year I put the decorations up two weeks early because there's enough light to get the job done after I get home from work now but it's getting progressively darker in the evenings and therefore potentially too dark to do a nice job in a few weeks time, and the weather was forecast to take a turn for the worse today (40 degrees fahrenheit of a negative change) with possible snow by Hallowe'en (happened a few years ago). I will go out and buy candy to give to the trick or treaters on Hallowe'en day itself as supermarkets have sales that day, and also because it calls my name if I leave it sitting in the kitchen for too long...