The Blind and Deaf have no such excuse since theirs are 100% a disability with little to no benefit

They usually call the benefit being part of the "culture" and that by removing the disability you will become an outcast and eventually lose your "family."

Now, a family that basically threatens you into being crippled or else they will ostracize and abandon you sounds pretty awful to us, but apparently its a super big deal to the Deaf and Blind.