You are truly dense. Browsing is not the only function. Let me list a few that I will use:
1. VNC into my server for administration or using an app like this:
http://harlekins.org/ServerAdminRemote/Server_Admin_Remote.html
2. Editing pages (and word documents).
3. Checking on other services, like Transmission
4. Looking up a word in my Japanese dictionary while reading
5. Checking on my QTSS
6. All my email will likely be handled on this device
7. My Calendar, via my iCal Server
8. VPN --> VNC into work for a quick task
9. Reading books and technical PDFs (OS X Server Docs, etc)
10. Look up a recipe in Epicurious and have it on a big screen while cooking.
11. Small device for keynote (ppt) presentations
This is just a few of what my uses will be. Sure I do this on my Air. But I think many of these tasks will be more pleasant on the iPad and it allows me to cut out two devices.