Yes! We have to eat.But we only need to eat enough to live till the next meal (usually 12 hours at most). We do not have to eat more than 1 kilogram of food per day. (And drink about 2 litre of ‘water’ per day.)

We need to breathe ‘good clean air’ every second of our life. Without oxygen we will die in 3-15 minutes. (Without water, we will die in about 3-5 days. Without food, we can live on for 3-5 weeks. Without money? 3-6 months ;-)

So let us grow plants, not kill plants - our oxygen producers.