Re: And what about people with hearing aids?
Not only intolerant, but sarcastic.
Umbrellas are an example of something that is useful - they can keep the sun off, and they can keep the rain off in warm weather without your needing to wear heavy waterproof clothing - but inessential. My point was that early adopters were mocked, but they stuck around. And they became acceptable - to most people.
People who have to wear hearing aids know well that other people tolerate glasses - because lots of people have them and because, well, sunglasses look cool - but are frequently very intolerant of hearing aids. It's irrational, but it happens. I can imagine a number of uses for Google Glass - such as speech to text for severely deaf people - which could transform their lives. But only if they gain a degree of social acceptability.
Think about it. Speech to text may work on a phone, but do I want to have to get a phone out and hold it up every time I want to know what somebody is saying? With intolerant people like you around, do I want to draw attention to myself?
As well as speech to text, there is the possibility of visual alarms being raised when audible alarms are detected.
There are a lot of deaf people out there, and if people learn to tolerate people with funny things near their ears and eyes, their lives could be transformed. But no, you want to stamp on them.
I suspect that you are young and in possession of all your faculties. Well, here's the news. As you get older you may acquire a disability which requires you to wear some peculiar item of clothing, or even have a prosthetic arm or foot. When that happens, you will feel the way about those people that I feel right now, about you.