Who are we to tell people not to get excited about what makes them excited? That's being a hypocrite and a negative Nancy. I say let people have their fun.
Who said not to get excited? Some of us are just calling out the irrational decision making. I'm super duper excited about getting the Vita, but man in my old age now (35 god I'm a relic), I think I've wised up over time.
I was the type of person who drove two hours to get an import copy of Zone of Enders just to play the demo of Metal Gear Solid 2. I'm the type of person who lined up in Japan in the crazy lines to get Dragon Quest 7. I'm the type of person who went to Japan at the launch of the GameCube in order to be the first to get it. I'm the type of person who imported a PS1, PS2, N64, PSP, GBA, and other systems in order to have it first. I know and understand the excitement, but I also knew I was throwing away money. With the launch of the Vita, I'm probably going to get 6 to 8 games which I'm trying to scale back because it's unrealistic I'm going to devote time to all of those games but I'm excited for it.
I've just decided despite my excitement, I don't want to light up $120 on fire just because I can't wait a mere 7 days to get a Vita. That $120 is 4 Vita games. It's not like the Vita is the only system I have. I have other games that I can play while waiting that extra 7 days; specifically Resident Evil is on my plate at the moment. Trust me, I get the excitement, I just don't think it's a rational thing to do. That doesn't mean people shouldn't do it but at least own up to it.