real-time 1080P transcoding for DLNA clients, IPTV, file server, Firewall ( sidewinder/MFE) , SSL VPN Termination (F5 APM), Cisco IOU/Dynamips/Olive Lab . the price difference between a 3770 ( K doesn't have IOMMU) and 8350 bought a Samsung 840 SSD that all my guests OS's run on.
Clearly for your needs you found the right chip. I'd be willing to bet the majority of those looking at desktop CPU's aren't doing half of what you are, at least not with any kind of regularity.