That's the logic that nudged me to buy it. I have a nice chair. I have a nice keyboard. I have a nice mouse. I have nice monitors. All of those cost more than the one-time license for something I stare at for hours a day. I've spent all that money to make my body comfortable. Why not do the same for my eyes?
A year later, I still love the way code looks on my screen. I feel like it's one of the better investments I've made.