Somehow, this is the only justification we can get anyone to agree on in the modern world. Should we educate kids? "Sure, as long as its STEM so they can be good taxpayers."
Come to think of it, this is also often the justification for art. Should I buy this piece? "Of course, it will gain in value"
"because it'll make me happy"
"why not just buy this lovely [painting/poem/record] instead, it'll directly give you joy"
The National Endowment for the Arts' budget is less than $200 million. Here's the approximate budgets for scientists and engineers:
* NASA: $23 billion
* NSF: $10 billion
* DARPA: $4.3 billion
* DoD: $780 billion (a lot of which goes to defense contractors and laboratories)
* The self-driving car industry has spent around $50 billion. And what have we got out of that industry that justifies that spending?
* Cryptocurrency startups are expected to get around $12 billion in funding in 2024. What have we got out of it that justifies that budget?
* Scientists got $5 billion dollars to smash around particles and play with statistics.
When it comes to funding, scientists, engineers, and tech-related endeavors have it extremely easy, and no one places the demands on the tech industry that they do on other industries.
I reiterate my comment. Scientists and engineers get billions of dollars of other peoples' money, both private and public.
Regarding the rest of your comment, art is not the arts. The arts include theater, music, dance, etc.