Evolved to like cooked food? Use your brain: cooking has only been around for AT MOST 10% of human evolution. Closer to 1%...
Access to fresh fruits and veggies is easy! Unless you live in an environment that human beings cannot live in, naturally. I hope you find a better source of fruits, my friend! It is so important! :) <3
I think humans have had fire since caveman days which was a long time ago. Even the ancient Egyptians had bread. The fruits and veggies at the grocery store are old. Unless you grow all of your own fruits and veggies it is not very fresh.
There are lots of fruits and veggies that humans simply don't eat because they need to be fresher than the old stuff that stores are able to sell.