Beyond that, stop complaining. We've all done our fair share of crap jobs to make ends meet, there's nothing wrong with pot washing. If you've got that much of a problem, provide your own gloves, but beyond that just man up and get on with it, this is what the real world is like I'm afraid, doing things you might not want to do.
Generally I'd agree with the above, but not in this context.
There's a fine line between 'volunteering' and exploitation. Sounds like you're falling under the latter category, in this situation.
Volunteer at a flying club by all means. I did work experience at one aged 14. The work was directly linked to flying: cleaning aircraft; working in ops; helping process bookings etc. I was given about 3 hours worth of free flying, backseating and some stick time. Not bad at that age.
I assume you're young (teenager?), just walk away. What you've described is beyond the pale.
Get a (paying) part time job as it gives you money in your pocket, commercial awareness, and understanding of how the big bad world works at an early age.