Without trying I would often spot 4 leafed clover. My grandfather was the same. The rest of the family used to joke about our luck, so it was clear to them that we were good at finding them.
I don't see them any more, I haven't find one in a couple of years despite trying.
I can think of a couple of possible reasons.
1) There are less 4 leaved clover plants now than 20 years ago
2) My brain has lost its pattern matching ability
It is such an absurd question, I wondered if the ultimate polymath hive mind would know?
I know they still exist, i can go find one in my yard with a few minutes of looking.