Is a person that works for no pay crazy?

I've been trying to organize a community group that would volunteer to help seniors with transportation and home maintenance needs, but when I contact people I think might be able to help and they hear they won't be paid, there's no interest. I work as a volunteer delivering meals to seniors and other shut-ins. When I tell them that, they say I am crazy to work that hard for nothing especially when I am not even reimbursed for gas.