How meta will it be when I get close to finishing the interpreter for the language I'm building, and I use my OWN language for all my future projects?

Building your own language is fun :)

But for it to be useful you need to have a focus, generic languages are much harder to get successful but a DSL can be very useful for simplifying things.

Like templating or scripting.

Especially if you need full control over what should be possible.

Using a generic scripting language can open up things not intended if the sandbox is not perfect.

@Voxera yeah, I find it a lot of fun. It's one of the few projects I've had the drive to finish on my own.