My father is like that. He claims they can't exist because he hasn't seen one (*). While he truly is surrounded by National Forest land on all sides, and he is in a good spot, aside from a couple days a year in deer season, he doesn't go into the woods. He takes pride in killing his deer the first time he goes out and ridicules others (like me) who take longer as "wasting time". Despite all of the potential, he doesn't actually have the exposure he thinks he does. It has proven impossible to get him to see that.
(*) He does have a story ... he told me of seeing something that looked just like a sasquatch would look "if they existed." (truly, what do you do with that level of deliberate blindness?) Knowing him as I do, I guarantee if they were proved to exist tomorrow, he'd be an expert, has known about them all his life.
Some people .. y' just gotta give up on.
'til 2 years ago, I had never seen a marten. I caught one on trail camera about 3-4 years ago, and possibly another. Then one day I saw two, separately, over a mile apart.
It's just a matter of being in the right place at the right time. Sometimes the odds of that are not what we expect them to be.
MIB