We can delay the problem far more than a few decades. A lot of scientific equipment is now recycling helium, for example. It doesn't typically get consumed like

We can delay the problem far more than a few decades. A lot of scientific equipment is now recycling helium, for example. It doesn't typically get consumed like oil or natural gas (it is inert, after all) so we can get by with our relatively fixed supply if we are smart about it. Which is why some people get really upset about the utter squandering of He.