Do you think it is impolite to eat too fast? Why?

Of course, this is not a question of politeness. The most important thing is that if you eat too fast, your stomach will not digest well, and the food will not be chewed well, the pressure on your stomach will increase, which is not good for your health, so you should chew slowly. If you eat out with guests, you'd better pay attention to the speed, otherwise others will feel embarrassed.