The question is that, is health necessary to lead a good and happy life? the answer is "yes". We should be very careful in keeping our body and mind healthy for our betterment and leading a good and prosper life. If we maintain our food and take proper exercise daily, it can be possible for us. Our daily food counts a lot in this matter, we should be careful in eating and maintaining our body needs.
As the world is very fast in almost everything and we are skipping a lot of things in eating which is necessary for our daily food. So it is mandatory to eat a balanced diet for good health. The other factor for keeping health maintained is taking exercise every day. We are not paying attention to this and becoming weak every day.