Everybody's interests are what they are.
What business is of anyone else's to say how narrow or broad anyone else's "horizons" ought to be?
None.
Ever read any success books? Almost all of them stress the importance of "focusing like a laser" on one single goal. Most disagree entirely with the concept of never putting one's eggs in a single basket. Most will tell you that's exactly what you should do.
I have ADD as well as AS, and narrowing my horizons is what I need to learn to do. Broadening them would only make matters worse for me.
I'm already spread about as thin as the Gulf oil spill. 
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...