Earlier quoted context omitted.
Take the words Maße (measurements, sizes) and Masse (weight, mass). There’s hundreds more of such examples. ß and ss have a different effect on surrounding letters (the a in Maße is short, the one in Masse is long)
as somebody else already said in this thread: this argument is irrelevant, it works just fine w/o the ß in Switzerland.
And I’ll prefer a natural language that tries to be as unambigous as possible, and with as little exceptions as possible, while being as expressive as possible.