

Exactly! If millions of people are eating something, then it probably tastes good! You just haven’t really tried it yet.
You’re not a special unique flower because you don’t like something. You not liking avocados doesn’t make you more interesting, it makes you boring.
Never. There is no line to cross, no milestone, nothing.
You will always be the same entity you are now. You should always work to improve yourself, but the stream of consciousness that is “you” is always going to be the same you.
Every day you wake up 1 day older and have 1 more day of accumulated experience. It’s that accumulated experience that makes people think you’re an “adult”.
If you really absolutely need to assign a binary “I’m an adult” label, I think it’s the day you realize that there is no such thing as an adult and all the people you thought were adults and therefore could handle adult responsibilities were actually just making it all up as they went, the same as you are doing right now.