Even if a side project were successful, in time it would also be pointless.

As are all things in time. But I estimate the impact of creating something successful would allow me to feel successful from success until natural end of life vs. feeling like a failure from now until end of life. Plus it will generate higher quality of life for my offspring, and my genetic code likes that.

The question is then reduced to the expected value of success achieved at some point, discounted by how close it is to my stastical life expectancy. Is it positive? Seemingly not. Then I ask what's the point of a life with negative expected value?

It seems like lots of people believe that life itself is a positive, so even a mean existence is worthy. This isn't something I'm able to accept for whatever reason, as I consider life to be EV+ only when it is one, if not two, standard deviations above the mean.