Just realized my annual check-up reminders are pointless

I send out postcards and emails every spring to remind folks about chimney inspections. Most of them end up in the trash or get deleted. Come winter, I get panic calls about smoke backing up into homes. These jobs are messy and take way longer than a regular sweep. I have to explain why it costs more, and customers get mad at me. It's frustrating because I'm trying to prevent problems, but no one listens. I feel like I'm wasting paper and time for nothing. Maybe I should just stop sending reminders and let them learn the hard way.