I really enjoy cooking as a hobby.
Cooking is a hobby of mine too its and art and craft of preparing food to eat
I agree! It's also an important life skill that can help someone finally by not having to eat out as often.
I find it amazing how much cooking techniques and methods vary around the world there is open fire, electric, outdoor ovens etc
I am definitely interested in the science of cooking. It's always interesting how people find that things taste different if they're cooked over an actual flame as opposed to an electric stove or oven.
Using fire or heat to prepare food is something only humans do
True, but I've read about studies where I believe monkeys, if given the chance, prefer cooked foods. 
archaeological evidence shows people were cooking one million years ago!
Well, can't blame them, things taste better cooked! It always probably helped with survival by killing bacteria present in the ingredients.
The type of cooking quite often is dependent on the training and skill a person has
Yes, cooking is definitely an acquired skill. But I believe anyone can cook!