So is olive oil your new obsession? What started you on liking olive oil? Do you cook a lot?
If you know anything about light bulbs, can you head on over to the "How Many Aspies Does It Take" thread and help those fellow Aspies out? At the rate they're going the light bulb will never get changed.
Light bulbs are not my obsession, and I have moved on from olive oil, but it did hold my interest for about two hours one night while I researched it thoroughly online.
As to why I like olive oil - I don't know that there's a reason. The biggest NT expectation I seem to have trouble meeting is a certain expectation that I have a "train of thought."
I do analyze things, and so I do follow chains of reason a lot of the time. But that applies to problem-solving, observations, etc. My nickname in school was "random," because I start thinking of things without necessarily having a catalyst I can identify. One night, I started thinking about olive oil. I could explain my train of thought, research, analyses, and results to you in excruciating detail if you like, but as to why it occurred to me to look into it in the first place?
Like every other human being there are things I like, and things I don't. Why is blue somebody's favorite colour? Why does olive oil interest me? The answer is the same. While I do cook, I'd have been interested in olive oil even if I didn't.
The big difference being, however, that NT's seem to need a reason to start thinking about their favorite colour. They see the sky is particularly blue and that triggers it or possibly someone asks. Me, I could be sitting in a sensory deprivation chamber, and I will be thinking about
something. Sometimes, in fact, I get so engrossed in my own thoughts I lose track of space and time entirely.