If I am not doing a lot of photo stuff, is there a good reason to get a retinal display MBP?

New to Mac, but have loved my iPad--need some business apps it can't do. I plan to do some old photo storage (assume retinal display will not play a role in that arena) onto a hard drive so old family pictures aren't lost. Don't do any gaming, rarely rent and download movies/videos. Will download music, do email, FB, online purchasing/surfing. Am deciding between Mac book Air 13.3 inch and MBP retinal display 13.3 inch. Am mid-sixties and have always used PC's at work and home. Is the MB Air a good choice, or will my old eyes thank me for the retinal display MBP?

Mac

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