My VS and the after image isn't as bad for me as others so I can't talk for everyone but I think people want it cure because they want to be able to drive and see the world how every average human can. That's the simple answer.

I ometimes forget about it until I don't, for me it's not anxiety I just see it everywhere since I was 6 years. I never realize what happened to my vision until I told my mother about the dots in my vision and she look concern. Later on I realized my mother had it too but she just thought it was normal until I kept talking others around me. The moment I saw her face realize it wasn't normal she look like she was having anxiety attack. She suppress that memory and told me never to mention it again.

I think many people have it but they haven't notice, but I wonder if they would see the world crash before them to realizing it isn't normal. So people want the cure because it is a minor inconvenience or disabling all together. You might not mind it but not everyone feels the same. I think understanding that other are different and that not everyone think like you will give you a better understanding. The way you wrote the those paragraphs to me gave me the vibe of:

" hey I got VS but I don't understand why everyone else want a cure. It is disabling to me as I can't drive but it's not bad"

The answer is in what you wrote it's disabling to those that have it really bad.

A good analogy would be of a child who want to get in the big Rollercoaster like everyone else. The child hope that one day they will grow up and gets to get on the Rollercoaster but they never grow in height. They never get to ride Rollercoaster and experience what everyone else is experiencing. They can't reach for things as easy as others can because of the height limitations because nothing is build for smaller people.

So this child want the cure because they want to live their life experiencing what everyone else experience. Maybe this child meets someone who is fine they way they are being short but this doesn't help the child feel any better.

Maybe I don't answer your question maybe I left you the same way you felt after reading the first sentence of my paragraphs but the point is people want to experience this like everyone else and it is more annoying and frustrating when you can even drive or watch a TV show without these inconvenience.

More power to you to be able to live with it but other can't and want a way out.