"The Food and Drug Administration (FDA) considers aging to be a natural process. This makes it difficult to get FDA approval for drugs that seek to slow or reverse the biological process of aging. Instead, drugs intended to target aging must target a disease that often results from the aging process in order to demonstrate efficacy and gain approval.

But there is growing consensus and effort among scientists to convince the FDA that aging itself should be classified as a disease and an appropriate target for drug development."

source

Edit: You're right, not at the moment. But the perception is changing.

Why not? As I said before, people will (unfortunately) continue to die. Accidents, diseases, violence, natural disasters.... Everyone dies for sure. But no longer from old age. Just as we no longer die of smallpox today. It's okay that we don't die of smallpox. It will be the same if we don't die of old age. We just die of other things. The more time, the higher the probability that risks will be realized.