One is obligated to distribute charity to the poor on the day of Purim. At the very least, to give each of two poor people one present, be it money, cooked dishes, or other foods, as implied by Esther 9:22 "gifts to the poor" - i.e., two gifts to two poor people.

We should not be discriminating in selecting the recipients of these Purim gifts. Instead, one should give to whomever stretches out his hand. Money given to be distributed on Purim should not be used for other charitable purposes.

וְחַיָּב לְחַלֵּק לָעֲנִיִּים בְּיוֹם הַפּוּרִים. אֵין פּוֹחֲתִין מִשְּׁנֵי עֲנִיִּים נוֹתֵן לְכָל אֶחָד מַתָּנָה אַחַת אוֹ מָעוֹת אוֹ מִינֵי תַּבְשִׁיל אוֹ מִינֵי אֳכָלִין שֶׁנֶּאֱמַר (אסתר ט כב) "וּמַתָּנוֹת לָאֶבְיוֹנִים", שְׁתֵּי מַתָּנוֹת לִשְׁנֵי עֲנִיִּים. וְאֵין מְדַקְדְּקִין בִּמְעוֹת פּוּרִים אֶלָּא כָּל הַפּוֹשֵׁט יָדוֹ לִטּל נוֹתְנִין לוֹ. וְאֵין מְשַׁנִּין מָעוֹת פּוּרִים לִצְדָקָה אַחֶרֶת:

Why would one be obligated to help others?

Is there a time when you needed help and someone helped you? Describe that time.

Was there ever a time someone else needed help? How did you help them