Because oculists will sell them to you weather you need them or not. And then you just get used to it. So many times I was maybe a bit more tired and I went to

Because oculists will sell them to you weather you need them or not. And then you just get used to it. So many times I was maybe a bit more tired and I went to some oculist/ophthalmologist to see if I had something and they immediately try to sell you glasses. Nowadays I feel completely fine, as a software developer, using the PC heavily everyday. But I could very easily be using glasses as well