Realize that BBF is inhabited by all manner and sort of users. Some are neophytes who want to use their BlackBerries well, while some are geeks who want to push any and all limits of the hardware.

I count myself in the latter category, and have no problem upgrading to the latest and greatest of firmwares. I know you can always back down, and am comfortable troubleshooting just about any possible failure. Some people aren't, and they should probably stick with their carrier's tested and approved firmware.