@thor
I don't get this obsession with thinking an acronym must be pronounced similarly to the component words. I never heard about this rule anywhere, and I've only heard it used to defend this pronunciation of GIF.
If we were talking about an abbreviation, that'd be one thing. But acronyms function as their own distinct words, and I don't see why they should follow an obvious made up rule, that doesn't get quoted anywhere else.
Look at JPEG. We call it Jay-PEG, but there's no "jay" in Joint Photographic Experts Group. And we obviously don't advocate to pronounce it "Joi-peg" either, or to remove the "ay" sound from "Jay-PEG". That's because JPEG functions as a distinct word, for which we found a way to say it that rolls off your tongue easily.
If for you it's easy and convenient to pronounce GIF as "GIF", then all the power to you. To me, personally, it sounds like an alternative way to call someone a gimp.
I'll stick to "JIFF", for the same reasons @Balor mentions. It's simply the way I would read GIF as a Romanian word.