I maintain and use a couple FOSS projects on a volunteer basis (no org behind it, no donations). I run Linux, I care about BSD a bit, and I'm not particularly interested in other OSes, especially proprietary ones such as Windows and macOS.

I feel very torn about the level of support I provide to other platforms.

On the one hand, portability is a good indicator that my software works by design, not by chance.

On the other hand, when something breaks on an OS that I don't run, it's 50% chance that I won't be very interested in figuring it out. Recently it's more like 80%.

I feel bad about this situation. Sometimes the issue reporter is not a programmer, and it feels like I'm the only one who can resolve the problem. Those other OSes seem to have fewer FOSS developers than Linux, so it's not like anyone else can pick up my slack.

Do you ever feel the same? How do you deal with this?