What's the problem? I think it's like you said earlier, they probably haven't ever cut their own wood and they are just trying to find cracks in your logic because it doesn't fit their beliefs.

I do it all myself, like you. I enjoy the process and take value from it, like a rewarding hobby. But yes, the equipment costs are real and need to be included. I think they're often underestimated. I buy two saw chains each year, a bar every couple, and a new saw about every ten. E0 saw fuel, 2 stroke oil, bar and chain oil add up. Splitter fuel, hydraulic oil, etc. It all adds up.

And yes, things do wear out and break even when the operator does everything right. The person who only breaks stuff when they do something wrong is probably doing lots of stuff wrongly.

But if the OP was simply asking about the cost/btu of cordwood vs propane, I think buying wood is cheaper.