There's no reason for sarcasm, especially not with such misplaced sarcasm. Nobody is arguing that the ß is required for the future of humanity, or that German is somehow different, or even superior, to English, and requires this letter to do its magic.

But for good or bad, it is part of the language. People used to it consider replacing it with 'ss' as ugly. Because of custom, and also because a double consonant almost always indicates a short vowel, whereas a single 's' indicates a soft s. Only ß actually represents the intended pronunciation.

f course w'd gt by witout it. Bt Englis wld similry srvive vs fewr lttrs, so y nt ablsh 1/2 t lphbt?