Honestly, it was boredom.
I had just moved to a new city, on the other side of the country. I wasn't in school, I couldn't find a job, I wasn't interested in making friends because I thought I was going to move soon. My BF at the time (meaning, he's an ex now) suggested I watch Death Note, which I basically ended up hating, but then started looking for more stuff, and it basically evolved from there.
In the 2 and a half years since I've started watching anime, I've really loved it. I'm glad I started to watch anime, because it's opened me up to a lot of new experiences.