functionality

Why MS doesn't like categories?

I’m using Outlook and Exchange both at work and privately. And I love them. I like how rules are working in Exchange and the way it syncs. I like Outlook vast functionality. Maybe I’m strange, but I don’t really like Gmail’s WebUI, it just isn’t for me. Even though it has advantages, like ability to view images. I can’t imagine me using email through the browser without OWA. I also like Outlook categories more than Gmail’s labels.