I made the jump to vegan last month. I'd kicked red meat about a year ago and I've never particularly cared for chicken. I do miss turkey sandwiches now and then, but then I'll have a sandwich chock full of veggies and I get over it pretty fast. =D
I find now three major differences about my life:
1. I have WAY more variety with what I eat than I ever did as a carnivore. Why should I stick with meatloaf Tuesdays and chicken Fridays when I can have Morrocan roasted squash with cous-cous, or stuffed grape leaves, or a number of other 500 recipe I have? Which by the way 80% of them I've never heard of before going vegan. 2. I lose about a pound a week without even trying and get my nutrients effortlessly simply by having a balanced diet and that includes proteins without needing unnessary proteins (and bad cholesterol!) from meat.
3. I have way more energy than ever before.
Here's a bonus one....
4. I've discovered a joy in cooking that can only be experienced by smelling the aromas from the various herbs and spices that I cook with.
As Albert Einstein said, and I am loosely quoting him here: nothing will benefit the survival of humanity better than the evolutionary switch to a vegetarian diet.
So why vegan and not vegetarian? There is nothing found in eggs or milk nutritionally speaking that cannot be found in other sources. Additionally, chickens and cows who can no longer be productive are slaughtered unnecessarily. I could literally talk all day about the merits of a cruelty free diet, but sometimes people just don't care because they like that meat "tastes good." Well, I'll enjoy my "tofu loaf" - it tastes just like meat pie! =P