I know exactly what it feels like. It’s mostly on a hectic erev Shabbos or better yet erev (three day) Yom Tov, when the bell rings over and over from these sweet kids collecting… or this meshulach.. We gotta stop what ever we were in middle of doing (again) and answer (again), take the time to find the “vault”, come back to the door…
For our own sake, for the sake of our children we try to do it bsimcha as any other mitzvah, knowing that it’s just so, a great mitzvah, all the more enhanced by the hardships in it’s trail. Also, the children take it ALL in, they absorb the attitude a parent has when going about Mitzvohs. So it’s a good idea to do it with zest, enthusiasm, happiness, a “bren”.
Of course, one must take caution when opening the door to strangers, this point being driven home by an incident r”l…