Consuming More Than You Need

Well i know im greedy especially when it comes to food. Does anyone really eat a serving size? Have you ever seen an actually serving size? If your like me its like who makes this ish up, that's it? Is that all im supposed to get? The serving size is located on the back or front of the package of food if anyone chooses to look. And there are also usda guidelines and yada yada. 4oz of protein, 6oz of veggies per meal, so on and so forth, eating according to how much you weigh. But who wants to go through all that, just eat until your full and your good. But is it really good for you? Do you really need all that? I did an experiment for a week of actually measuring out serving sizes and you know what i was ok, i wasn't hungry and i wasn't sluggish. I have a food scale that i used and it wasn't as bad as i thought it would be. Now fast food was harder to do this with, but we ate out 2x this week. Me and dh shared a regular size meal at mcdonalds and we were both satisfied. We also ordered 1 chinese meal with rice and all 3 of us shared it and was not hungry after. Usually when we eat out everyone has a meal to themselves. Its really something how we consume more than we need. Just food for thought.