Sometimes I give money to anti-fascists, political activists and regular people who got repressed so they can pay to a lawyer.
Why not to spend this money on charity? Or a political party who oppose fascist? Or, heck, spend it for weapons for Ukraine! I don't understand.
Yes, particularly https://xmpp.org/extensions/xep-0313.htmlMovim has stickers, but I don't know any other clients with stickers.
Convenience. And supporting modern standards (XEPs). It includes support for E2EE (OMEMO), history fetching and search, image and links preview. And stickers :)
To any confused non-Americans, remember that 1 foot is 30.48 cm