Sometime in my late 30s I started appreciating more nuanced flavors, including black coffee, but mostly vegetables like green beans, tomatoes, asparagus, peas, carrots. Once that happened, I started realizing how much food is blasted with so much salt that obliterates said flavors.
I assume it's mostly normal, as a kid I found my parents tastes bland...ew who could eat vegetables by themselves with no seasoning? Well, me now apparently...