Has been here and growing. The last real CPU Intel or AMD made that wasn't 64-bit was the Core Duo (not to be confused with the Core 2 Duo, mind you), which for all intents and purposes was merely a rebranded Pentium M. This is not to say that the Core Duo was useless, as it was essentially a necessary stepping stone for Intel at that point in time, but the point still stands.
Not only is 64-bit the future, but it is here now and it is here to stay.
Which makes me even angrier at MS for not having 7 be 64-bit only.
(Note to VIA fanboys: VIA doesn't count. Sorry.)
[/rant]