[He sounds so confused. Why would you not just write out what you feel if you really want to let the other person know what you feel. ...Which honestly, the fact that it doesn't come through in text seems to be the advantage of text for him.]
Or shorthand for other words. [That doesn't make much more sense to him - writing more isn't more expensive here because writing material is free, and picking a picture takes more time than writing out "I'm happy".]
Audio
[He sounds so confused. Why would you not just write out what you feel if you really want to let the other person know what you feel. ...Which honestly, the fact that it doesn't come through in text seems to be the advantage of text for him.]
Or shorthand for other words. [That doesn't make much more sense to him - writing more isn't more expensive here because writing material is free, and picking a picture takes more time than writing out "I'm happy".]