Well we know that the ovary doesn’t scar when it releases an egg but we don’t really know why.
If/when we do find out why the ovary doesn’t scar it might be possible to use this knowledge to develop new treatments for treating scars (fibrosis). It would most likely be used to tackle scars that you get in our abdominal cavity (peritoneum) which can be caused by operations and repeated injury like that caused when you have dialysis.
However this might not happen. We might never understand why the ovary doesn’t scar or if we do we might not be able to use this to treat other scars.
That’s the risk you take in science. You ask a question and you never know what the outcome will be. But it doesn’t mean it is a wast of time. In the future someone else might wonder why the ovary doesn’t scar and have a different way of using the information. Then the work has always been done for them and they can build on top of it. Or the answers might inspire someone else to ask different questions.