Why shouldn't I care what model/make/year my bicycle is?
The problem with the question is not the owner's interest in the answer - it is clearly there. The problem is that the answer has almost no value for the community of this site: 


most generic bikes are hard to identify to begin with
most successful identification will be based on a photo which cannot be used to answer the same question again because questions and answers are centred around searchable text and tags.


In total, there is too little to gain from answers for the community in the short and in the long run to make them worthwhile. Hence, they should be banned in my opinion.