It seems to me that you are still doing it to showcase it to others. I understand it feels great to talk about it with people understanding the effort you put in, but it really is a personal thing IMO.

No, this is just a fringe perspective based on the hyper-introvert bias in a lot of people on this forum....

That's not the goal of recreational programming though. You don't do it for the ROI. It may have a ROI, but I don't do this for that, I do it because I am genuinely curious.

Dereferencing i is undefined behavior if it's null.