Perhaps don't put your system in the path of a proton beam? I've had a large test suite that consistently used 8GB running for three years without ECC RAM. Any bit flip would have been caught by the test suite. My conclusion is that bit flips are entirely exaggerated (probably by the hardware industry for obvious reasons).
Do you have the suite published? The frequency of errors depends on how much memory and in which conditions it is being used. Datacenters, supercomputers, even personal workstations used for scientific calculations benefit from error correction. Check this out: http://techcrunch.com/2009/11/02/new-study-proves-that-ecc-m...
Usually comments that complain about downvotes are downvoted. Have another go, perhaps you'll reach -20. If you persist, you will be eminently qualified as a Wikipedia admin.