$ because - hard work low pay cold weather - I would do it for free.
For example, I give away thousands of truck loads of free lemon and avocado and eucalyptus firewood from my grove and from neighbor’s groves. I get offered money from neighbors and from the people that come for the wood.
I turn down the money. If money were the reward, it would be too much work for too little money. But, it makes me feel good to have the fire hazard and snake and rodent breeding ground removed and see it not get wasted and see people who need it get it.