I've been without Photoshop for two years since my old Power Mac G5 got replaced with a MB Air (long story). Aperture covers 95% of my needs, and Pixelmator 4.9%. If I had my druthers it'd be PS but I don't miss it that much (nor the cost). For what it's worth, Pixelmator will save files on iCloud, and I learned to have Aperture use referenced files on Dropbox. Kind of nice for my needs, and Preview can resize files and do basic adjustments. I never use iPhoto.
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