I know what you mean in terms of food. I am very non-picky, and while I prefer to eat a variety of different foods over a day to avoid boredom, I don't really mind what. (I do have favorite foods, like muffins, which I shouldn't really eat because I have a wheat sensitivity...)

However, I don't find it more fun necessarily to go out and do new things with friends... It can be fun, but I mainly find it exhausting. My 'transcendental fun' usually takes the form of engaging conversations with interesting people. This is probably an introverted trait.