Well, I have oodles of time, so that costs me nothing. I have plenty of energy, again costs me nothing. My money is limited, yet somehow even when I leave some outside for people to find, I always have enough left over. So AGAIN, that costs me nothing. And effort, yup have plenty of that too.
If YOU see your time, energy, money and efforts as a sacrifice that you may or may not want to make to help others, that's on you. MY time, energy, money and efforts are cheerfully given. ALWAYS.