You'll bring more money into the local economy therefore a greater economic benefit by dropping fees and having people want to stay the night, grabbing a pot and parmy, grabbing a cab each way to the airport etc
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None of that pays for the airport though. It lines the pocket of the hotel owner, the publican, and the cab operator, all of whom are already in situ, and would be anyway if one or two GA through didn't come through.
It's a pleasure flying in countries that see aviation as critical infrastructure
It is seen as critical infrastructure in this country. That's why so many aerodromes operate at a loss. It's extremely rare to see one close.