just......wow.....
You remind me of a very young man I spent a great deal of time talking with a while back. So, I'm not gonna torment you much today, aside from suggesting perhaps you should be issued a plastic spork.
I can throw knives. I can throw them rather well, and quite accurately. But, not because I ever expected to do so in battle, but rather because it earned me beer as a young man. A much more sensible reason, no?
For that matter, I have spent a great deal of time in my mis-spent youth learning to use swords, while mastering the art of the Sukiyama Nose-Toss. But I ceased once I realized that:
1. I don't carry swords around regularly, and the skill was of no practical use.
2. Rock beats Scissors. Guns beat Swords.
Trust me, my spork-wielding berserker, once you are in the Infantry (subtle, eh?), you will be carrying enough heavy, awkward, uncomfortable, unwieldy, barely-functioning crap, that a big heavy knife will be the last thing you want added to your already overwhelmed pack-mule frame.
And nobody carries a knife or sword strapped to their back, outside of the movies. Because, you see, those guys aren't wearing 80 lb rucksacks on their back.