For some years I volunteered for a local-lifts service, which included taking the calls once a month and trying to find drivers, but usually ended up doing them myself.
I did get annoyed now and then, with the people who (judging from expensive, evidently fairly new clothes etc,) could have afforded taxis for what were always short journeys, but seemed to feel entitled to free rides. Or who would point out the odd restaurant on the way, and tell me they often ate there!
But those cases were few, and perhaps unsurprisingly it was always those who were apparently the poorest, who tried to give me a pound for my petrol.
I can’t undertake any regular volunteering now, since 3 little Gdcs do mean I can be needed at any time for one-off emergency childcare - dd does have to travel for work now and then and although he’s very good and capable, it’s an awful lot for SiL to manage while working full time.