I have been chanting since I was 9 years old. For the first 6 years it was just slave labor that my dad made me do (a priest). The rest I did mostly for myself.
When I went to seminary (GOA), I started getting paid left and right. Most "other country" people will pay you, or people that grew out of that tradition. I once had a grandfather hunt me down at a funeral, at a dead sprint, to pay me.
It is really helpful for me, as I use it for my gas money. Without it, I would have a hard time making it to any sacraments. It helps the priest, it helps the people, and in all honesty it probably helps me the most. I learn, I reconnect, and I help.
We should be payed for an honest day's work. If you can afford to do it for free...then do it for free. If you need the money...well...then you need the money.
If churches can give people scholarships to help them through school, they can give you some tips to pay for gas.
I'm not sure these were good analogies, they just popped into my head.