I'm a really casual contributor from Singapore, occasionally going on edit streaks at night while listening to podcasts/videos. I don't quite remember how I first came across Wikidata. Probably was randomly browsing through various open crowdsourcing projects, and saw this thing that was, to me, less tedious to edit than Wikipedia. Plus I like the idea of meaningfully connected data that bots can parse more easily.
Some of my main interests include music, maths, and video games, though I'm not actually part of those respective Wikidata projects (not yet anyway). I also do some OpenStreetMap edits around my area, while on the subject of open data.