Right now in my pantry I have extra virgin olive oil and extra virgin coconut oil. My wife does not like to use coconut oil for two reasons. First one it's hard to get out of the jar because it's not in liquid form and she feels it makes the food too greasy. I have heard you should not cook with olive oil because it becomes too unstable and breaks down at high temperatures.

My wife and I do a 50/50 split on the cooking. It's hard sometimes because I'm all for Primal/Paleo but she is more conventional and always tells me "you could just eat grains and everything else in moderation".

So I'm looking for an oil I can cook the majority of my food with. Also can I use butter in the majority of my cooking as well?

Just looking for some good advice. Thank you.