Windows is for Gamers!

I was talking to a good buddy of mine, who was complaining how his computer has been screwing up (it's a windows PC). I started talking to him about how Macs are a great alternative. I'm not trying to be one of those Mac addicts who must convert everyone they see, Apple has a whole chain of stores for that. His main excuse for not going mac was games, thus I conclude Windows is for gamers, while Macs are for people who want to be productive. I know I bought my mac for Final Cut Pro and all the other great apps from Apple. My opinion on windows users has drastically changed from this brief conversation. I no longer will listen to windows users, all they do is waste time playing games. I cannot think of one great app that exists solely on the PC, except for the many games that are PC only. Just an interesting thought. I invite other people to post and prove me wrong. Are there great apps that exist solely for the PC, if so what are they?

P.S. and by PC I mean the Windows world.