Glasses Wearer Woes

I am an eye glasses wearer. I have been since I was 18months old. For all my life that I can remember, I have worn glasses. I have had every style, material, and lens known to man. I have never worn contacts. Reason being I honestly do not feel like myself without my glasses.Glasses have been apart of my life for so long, they feel like a part of me. Most of the people I interact with also do not recognize me with glasses. I enjoy them and the services that they provide my face. Plus I think I can pull them off pretty well.
For those of you who do wear glasses, you probably have had to deal with this at some point in your lifetime:

This question bugs me somewhat. I do not understand what the fascination of wearing glasses is to non-glasses wearers. Knowing that they get some small pleasure from wearing my glasses, I usually allow them to try on mine. Once that happens, the following comments are usually made:

The first comment I find interesting. By trying on someone's glasses, people seem to think it is okay to comment rudely on their disability. That is what glasses were invented for, to assist with a disability. True, vision impairment is more common these days. It is so common it is as if we have forgotten why people are wearing these devices in the first place.
The second comment I always am a little confused. Why do you suddenly need glasses? Have you realized that your eyes are not in the best shape upon wearing my glasses? Do you like how they feel? Where is this sudden urge coming from?
The final comment I am always most confused with. How on earth are glasses supposed to make you look smarter? I do not instantly think that someone is smarter simply based on their eye wear. I base their intelligence on what they can actually do. Am I missing this smartness scale that every has seemed to have adopted? Was there a meeting to decided this? Many people who wear glasses are not of highest intelligence, same as many people who do not wear glasses are very intelligent.
This whole trying on another person's glasses has always interested me. I do not get upset when people ask me to try on my glasses. To be clear, this causes no offense to me. I just always find it to be interesting. I still let people try on my pair but I always wonder, why do you need to?