I wouldn't say I have a special interest that I don't care about, but I can and do get obsessive over things that I no longer really enjoy, but can't seem to let go.
For instance, I watch Glee regularly, and have since the first season, but I rarely like the episodes, at least not entirely. I love musicals, and appreciate the topic of 'outcasts', so I feel like I HAVE to like it or something. I typically come away from an episode thinking it was very corny and overall not enjoyable, but I still watch the next week.
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Aspie Quiz: AS - 141/200, NT - 77/200 (Very likely an Aspie)
AQ: 34/50 (Aspie range)
EQ: 32 / SQ: 68 (Extreme Systemizing / AS or HFA)
Diagnosed with AS and Anxiety Disorder - NOS on 03/21/2012