Worse still for scientists
Seeking and never finding isn't all that bad because you are never proven wrong.
It is much harder for those scientists who built a PhD and a career on a broken theory and have their life's work trashed by someone who figures out a better model. These poor buggers tend to get cantankerous and obstructive (far beyond just playing devil's advocate).
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it. " — Max Planck
As for the lifetime of theories... They only stand until a better one comes along. Newton was at least humble enough to state that his theories were limited by his observation powers and he expected there to be improvements. Thus, Newton was never wrong.
It would be highly dubious to claim that Einstein "got it right". In 500 years will we still say that?