But even if these fruits didn't come of it, something doesn't have to be "productive" or useful according to your definition to justify its existence. Just like art or music doesn't have to be "productive," useful or even beautiful by your definitions to exist.
There is more to human existence than breathing, eating and leaving bad comments on websites.
Do you use GPS?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5253894/
Have you ever used a MRI or undergone a CAT scan?
https://en.wikipedia.org/wiki/IDL_(programming_language)#His...
https://en.wikipedia.org/wiki/IRAF
Used anything that involves interferometry - contact lenses, anything with a lens or a laser, optical coherence tomography (OCT) etc?
https://nexsci.caltech.edu/workshop/2003/2003_MSS/07_Monday/...
I can go on, but I think I've made my point.
But even if these fruits didn't come of it, something doesn't have to be "productive" or useful according to your definition to justify its existence. Just like art or music doesn't have to be "productive," useful or even beautiful by your definitions to exist.
There is more to human existence than breathing, eating and leaving bad comments on websites.