Although He is, as you point out, a natural product of radioactive decay in the crust, the rate of production is modest.

When we extract helium from trapped gas reservoir deep underground we are mining many millions of years of accumulation.

Helium is approximately as "renewable" as natural gas. In 100 million years time, everything we have produced will be replaced. All we have to do is wait 99.99 million years!

All too often, mankind sees a precious accumulated resource that is barely renewing and decides to suck as fast it can for maximum economic benefit:

Drinking water in Aquifers
Oil and Gas
Helium
Forests
Fish
The Atmosphere...

(I'm not a fish kisser or tree hugger, btw, just trying to give you the geological perspective on resource exploitation)