I knew I wanted the 5D MK III right after I read the specs, after the announcement. I also knew that there would be updates and bug fixes within a few months, I also knew that seasonal (Christmas, black Friday) sales would drive prices down for a short run...
I own an amazing 7D, still worth every penny I paid for it 2.5 years ago, to me anyway. I knew I wasn't going to pay $3400 for the 5D3 that I wanted so bad. Put on my big boy pants and decided to wait it out... Did I miss out? not really, most bugs are fixed, my 7D is still an amazing tool in my hands, still made money with my 7D to help pay for my 5D3 and waited till this week to grab one for $2600... I'm happy with what I paid and have no doubt I'll continue to be happy with that, several years from now when it's selling for another $600 less...
Everyone knows the drill. Just wait it out if it's too much now. If you don't know the drill, you will learn after you buy the first time as an early adopter. It was obviously worth it to you when you made the intial purchase, go enjoy your gear and hobby and fahgetaboutit...

Just make a choice not to be an early adopter anymore...