I'll let history tell you. Talk to me in four, maybe five years.
IF this forum is still here despite Apple's demise.
Bah, more empty talk. Afterall, if this forum isn't here in 4-5 years, then you wouldn't be able to contact anyone to rub their noses in it. And if they're right and its still here but you've vamoosed, it again doesn't work.
If you're not simply blowing more "DOOM!" smoke, you would be willing to exchange IRL contact information through a third party, and perhaps even make a gentleman's wager with real money, or some other tangible, so that on some specified day .. say 31 Dec 2014 .. this so freely-offered prediction can be nailed down and clearly resolved. Unfortunately, all too often when there's no consequences for our words, the words get silly.
FWIW & personally, I'd say that MR will still be alive and kicking on 12-31-14. And if you give me a 4:1 payout, you can put me down for at least $1K on the table.
If nothing else, the discussion board new user registrations illustrate why this is a slam-dunk that doesn't make even odds appropriate: looking at my 7-2001 MacRumors Member registration number (#1,937) versus thread participant DMann's 1-2002 (#3,566), it illustrates a historical user growth rate of roughly +271 new registers per
month back then, whereas your 1-2008 registration (#149,276) and versus a fresh Sept 2010 one (#491,0xx) yields a contemporary growth rate of +356 per
day (+10,679 per month).
Golly, MR is so stagnant that its demise is obvious. 
...simply decide for yourself how you want to parse the statistics; another way to do so is to observe that the total membership at MR from nearly a decade ago now gets that many new members every 2 months.
-hh
