> Speaking personally, Datasette is the first project I've worked on in my entire career where I'm confident that I would be delighted if I was still working on it in 10-15 years time.

I feel the same way about cloud custodian and starting stacklet, but I also put stuff into a foundation, so that it has proper survivability beyond the org, irrespective of the org's decisions (Ala hashicorp), and true survivability and impact on an oss project means getting past individual contributor bus factor.