The fake deli meats are tasty. But it is odd that a vegan would want some thing that tastes like baloney. Fake cheeses smell like ass to me, and tastes worse than American cheese (which is not cheese at all).
Why do vegans want this stuff? Because they are probably starving for comfort foods and don't know how to cook. No matter how you eat, cooking your own meals a majority of the time is the most important step toward being healthy.