You fail to plan and you plan to fail. Planning your meal(s) will limit stress, help reach your goals quicker, eat better and even save money.
A well-balanced diet is very important as we all have heard a time or two. There are many reasons to why eating better will benefit your overall health. Do you honestly know why? Be honest with yourself. It's perfectly fine if you don't. As just a begining eating better/healthier can boots your immune system and your overall mood. Honestly, those two benefits should hold your attention.
While I won't be able to run down the full list of benefits or the individual specifics for you; I can generalize the good it would have for everyone. Purchasing fresh and local helps your local economy and hightens the freshness ensuring no preservatives, chemicals, or dyes have been added to your food.
So you can eat food that definitely taste better. You can save money from eating out. You are voiding harmful chemicals in your body while helping the economy. Now I call that a W (win!)!