[vms20591]

Kudos to you, for working on the stuff that you really like. These toy projects could teach us or the people that see them, a lot of stuff.

"Senior Developers" doesn't mean that they will relate to everything related to software development. Either, they stick to the domain they work on or, to the ones that makes money.

Personally, I've always been fascinated with systems programming, thought I'm not much proficient or put in much effort. Whether something is going to make money or not, like many personal stuff we do (art for example), isn't eventually going to make us money, rather it gives us a sense of satisfaction.

Keep doing what you do!