All-you-can-eat reasaurant

Nowadays, more and more young people like to have meals in all-you-can-eat restaurants, which provide a great amount of food at a very low price. People would think that the more they eat, the more they earn. After all, to save is to earn.
I used to like to have meals in all-you-can-eat restaurants. I usually took a plate in my hand and walked around the foods area to choose what to eat. Meanwhile, I found something incredible. Some people were busy with having their food, others chatted with their family or friends with mouths full of food in their mouths, and still others rushed towards the food area to get food when servers brought out new dishes. What a harmonious view! Everybody there had a great mood and a joyful laugh. It seemed that there was nothing anxious at that moment. As for the other viewpoint, there is no quality at all [Although grammatically correct, we dont normally say "there is no quality at all"]. Eating too much may upset our stomachs and it is harmful to health. To stay in shape, or to save money? That is a question.
Recently, some people started a slow food life. Not to eat too much and too hurry, but to enjoy what we eat. I really agree with this point. Having meals is our daily routine. Why not enjoy it and take it easy? Thinking about some people in Africa, We are more fortunate than they. So now, just eat what we need. Don’t waste food.

I think that your English is very good! Well done ^^ 加油!