>sticker I drew for him

That's pretty neat, but I haven't seen that; how do you do your own stickers? I don't think anyone would argue against being able to send free-form drawings. The stickers in Skype and Telegram, otoh, seem to be mostly "meme junk". Random clips of TV, or (IMO terrible) cartoony drawings.

My daughters use them sometimes, same with strings of emoji. But I find it expresses far less than words would do. It's like they're just hunting around for a cute image, with little thought beyond that.