Well, sounds like you're a bit frazzled there, but don't panic! You'll get the hang of it soon!
I was never too big on meat in the first place so I didn't really have any trouble giving it up, but I went through a process of first just cutting down on meat whenever the opportunity arose before finally giving meat the boot! From the sounds of it you're eager to give it up straight away, so perhaps just try eating some meat-like substitutes while you start getting used to it. I personally wouldn't recommend jumping straight into veg*nism but if you feel confident enough you can hold back the urges I say go for it!! You're doing a great thing just committing yourself!
Yeah, the questions from people really are a pain in the a**, I don't get too much of it any more but when I first "announced" my decision I got lots of it. My understanding of it is that people don't so much want to attack your decision, but they're curious... my friends all thought that being vegetarian meant eating nothing but lettuce and apples (and I'm not joking either...), so if you can just work out your answers to these FAQs, just tell them what they want to know. That way they'll stop asking you so much.
I stopped eating meat for several reasons:
#1- I have always hated animal cruelty in any form, I'm a very sensitive person who empathises with just about everything, so I can quite literally feel the pain when I see an animal in pain
#2- after my rat died I couldn't bear to think of millions of animals a year having that same look of vulnerability and defeat in their eyes
#3- My "religion" (so to speak)... or belief is a better word, fully endorses a raw, vegan diet, at first I thought it was impossible... but then I researched and found how bad the meat industry is...
#4- I knew veg*nism is probably one of the healthiest diets there is!
As for you're question on everybody not eating meat, I don't so much want to push every person into it without warning, I personally believe that with a frequent, yet non-aggresive, push for vegan diets, the world will slowly work it's way into veganism, for now all we can hope for is that the meat currently killed is brought up in a healthy and happy manner until meat-eating is phased out.
Hope that was of a little bit of help to you!