Of course, eating an orange is healthy, but most of the nutrients and the amazing health benefits are actually in the skin of an orange and not the flesh itself. So if you don't really like eating the skin of an orange, you will not get all these health benefits just from the fruit and like myself I can't eat many oranges because of the acid which is harsh on my stomach and there are a lot of people like that too.
These oils are also 50 to 70 times more concentrated than the fruit or herb itself, so in order for you to get the health benefits of one drop you would have to eat like 8 oranges including the skin. Which is also cheaper to have the oils than the fruit itself.
Another thing is that you can apply these oils on skin for skin irritations or cuts, or to rejuvenate it and when applying on bottom of your feet, it takes few seconds for the oils to get into your bloodstreem and few minutes to affect every single cell in your body.
You can inhale or diffuse it which is another great way to absorb these oils since they work with your brain.
You can use these oils as natural cleansing and disinfectant products etc. The list just goes on.