Ask HN: What's the one software stopping you from switching over to a Mac?

For me, it's Shapeshifter Clipboard Manager and it pretty much copies anything. Hold down Ctrl + V and select what to paste from your list of copied items. AFAIK, there's nothing close to this for OSX. If there were programs like Shapeshifter for Mac, I would switch in a heartbeat. Non-Mac users, what's the one software stopping you from the switch?