VNs/Eroge, Philosophy Books, Music (piano and electronic and their respective niche sub-categories for the most part), Music Production, Rhythm Games (most notably Osu!), Scenic Nature, Interacting with people, Milk Tea, and Idols.
It's only a short-lived satisfaction to just know something and be content with knowing it... but to instead experience it, is perhaps an eternal satisfaction of sorts. (*‿*✿)