Am I strange in that I write tests for all my hobby projects?

I do my own projects in my spare time away from my job as a dev. Sometimes as side hustles, sometimes just because I'm interested in stuff, working out problems, or learning.

A few colleagues / pals have said I'm weird because 'it's only work that demands tests', or 'why would you waste your time', or 'you know your code, so why bother?'.

I find it's nicer to be sure of what I've done is correct and working as I want. Less stressful. I also don't have anyone else to PR my work, so even more reason to test. It also helps for debugging whether you test before or after.

What do you think?