I’m not claiming we haven’t made a dent. I’m claiming I’m in roughly as much danger from these things right now as any human ever has been: middling results.
If we can speed up the cures by even 1%, that’s cumulatively billions of hours of human life saved by the time we’re done.
And that hypothetical "billions of hours of human life saved" has to be measured against the actual damage being done right now.
Real damage to economy, environment, politics, social cohesion, and people's lives now
vs
Maybe, someday, we improve the speed of finding cures for diseases? In an unknown way, at an unknown time, for an unknown cost, and by an unknown amount.
Who knows, maybe they'll give everyone a pony while they're at it! It seems just as likely as what you're proposing.