I may be a minority opinion here (so what’s new), but while I am all for increasing our giving Tzadaka, especially on Purim, there are ample other ways to do it.
I know quite a few people who are “forced” to give up their simchas Purim with their families because they have to high tail out of town for Purim. They can no longer afford to dole out the Tzadaka that was given in past years to the collectors and they are too embarrassed to face them.
Also, there are families who are “hit” and are “forced” to open their doors and allow into their homes people they do not know, whether legit or not, and to give to Tzadakas not of their choosing and amounts they cannot afford.
I’m not saying these are not good causes but there are a lot of “aidle”, modest people who do not appreciate this intrusion into their lives. The “bochrim” are usually loud and boisterous and this practice is not appreciated by everyone.