[untog]

I actually wonder what a big loss it would be. I was one of those who switched because of the availability of Boot Camp and have long since left Windows behind. But how many native apps do people really use these days, compared to web sites? I genuinely wonder.

[octorian]

Almost all serious games are Windows-only native apps, or at least are at launch.

Also, there's always going to be something you need to run that's a Windows-only binary. You may not need to run it frequently, and you might only stumble upon it every few years. It might be a utility to interface with a specific piece of hardware, or some program that performs a very specific and/or niche function. But there will always be something.