The war is won by Canon because they have a better marketing ploy than Nikon does? lol
Nikon has lenses that are just as good as L Glass, Canon just likes to charge more and be flashy.
http://www.kenrockwell.com/tech/nikon-vs-canon.htm
I know, I know, but I saw this and he makes a lot of good points that I noticed too when I use a Canon.
Honestly just go to Best Buy or somewhere that has cameras that you can pick up and play with and see what you like. When I got my Nikon D300 I was also considering a Canon 5D I picked up both, played with both (I had already looked up the specs earlier), and I chose the D300 because it felt right.
I also suggest checking out craigslist like someone else said. Just buy an old DSLR to start out with and learn. I suggest the Nikon D50 or D70 or the Canon Rebel XT or XTi
Trust me, it's better to start with a lower model camera and spend money on lenses, at least when you upgrade you can keep the same lenses and use them for years.
good luck!
oh btw, NASA has been using Nikon since the 70's, FUCKING NASA! Where's Canon at? oh still on earth....ok