Why learn programming languages?

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Why learn programming languages when they are just changed and become obsolete?
There's only so many programming languages you can learn and they just become outdated eventually because people make new ones.
What's even the point?
I really wanted to learn python because I'm in life sciences and wanted something I could use but then I saw it is top 3 and it probably replaced something else.
Eventually it'll be replaced too.
I'm not a programmer so why would I play musical chairs?
Why is computer "science" knowledge so fleeting?
At least biology doesn't get outdated on a whim. Or at least hasn't for decades.