I also went from vegan (almost no soy though) to paleo, and I still don't eat much meat beyond fish/seafood, eggs, and poultry. I was never a big fan of red meat even before going vegan, and although some people seem to need it, I haven't felt like I do. As long as I'm making sure to get plenty of healthy fats into my diet by way of good oils and fish such as salmon and sardines, my body seems perfectly content for now without the steak.
We must learn to do what the leaf and the whale and the wind do of their own nature. We must learn to keep the balance. Having intelligence, we must not act in ignorance. Having choice, we must not act without responsibility
-Sparrowhawk, The Farthest Shore by Ursula K. LeGuin