Secondly, Nvidia binary drivers are free and as long as they are free I DONT CARE if they are open or proprietary.
Would you pay for a "open" but not "free of charge" driver? Personally not...
I don't pay for my OS and I don't pay for my drivers. Open or not its OK for me. I don't have security concerns about Nvidia. I believe Linux kernel is more possible to have a backdoor than Nvidia binary driver.
If I had an 8600GT I would be able to play Wargame European Escalation. With my Radeon 2600 PRO I can't!