I’m the one that removed it, so I will answer:
It was a judgement call. The question is essentially a poll, and is completely open-ended. The Fluther Guidelines clearly frown up such questions, but we don’t necessarily remove them all. The reason I removed yours, but left in tact many similarly open-ended questions was simply one of response time. We will typically allow open-ended questions to remain if many in the community have moved to answer it.
In fact, I would have removed ALL of the questions that you are comparing yours to, had I caught them before they had more than 10+ responses.
There is an already-voiced concern among some in the community that questions that can be answered definitively are being drowned-out by open-ended questions such as yours. Personally, I think there is a balance to be found between the social and the intellectual sides of Fluther.