Coconut oil is good for cooking because it tastes great, but regardless of whether it'a a shorter chain triglyceride than other fats it's still 90% saturated and therein lies the problem. I wouldn't use it as a primary source of fats long term, for my money you're better off with olive oil or similar which is low in saturates. Everything is fine in moderation and it does taste fantastic, and it has a high burning point too which is good for stir fries etc.