I went trick or treating for the very first time in my life yesterday (I am from mediterranean europe where it really isn't done), with dds aged 3 1/2 and 18m and a bunch of their friends (and their mums, ie my friends!). It was so much fun, for them, for us, we only knocked on houses/flats with pumpkins, and people were lovely about it. got back home at 6, had a few more coming round (including some really well dressed up teenagers who scared the beejesus out of dd2!), handed out sweets and then brought in our pumpkin at 7.30 when dds collapsed into bed in a sugar slump. a great time was had by all.
now, i guess we do live in a "nice" area so my experience might be influenced by that, but it honestly did not even enter my head that it could be begging! it is a weird, weird way to look at it.
i am really into celebrations- really i love parties, i love dressing up, having people around, baking cupcakes and drinking wine with other parents while the children have fun. i think it is so terribly important to fill children's lives with celebrations- these are the memories they will keep with them forever- we always had "big" christmases growing up, big easter lunches, big birthdays etc (not expensive or fancy- just lots of people and festivities) and of course we have carnival in my country which makes halloween look like a tame affair.
so what if it is a commercial holiday- there is a meaning to it if you want to go deeper, but even if it is just an occasion to have a bit of fun, i don't see anything wrong with it.