I want the data for the same reasons that any content producer in the Internet wants it. Bloggers, youtubers, any company...everyone. Despite the noise this data might contain, it seems it's useful for everyone except for scientists...to whom I am surprised to hear that it's better not to give the data, in case they misinterpret it. Very risky statement and precedent.
I didn't mean to imply that the data wouldn't be useful, I was more asking to see if you had any specific questions in mind that this data could shed some light on. Relating download rates to citation is the first thing that comes to mind for me, though honestly I'd be much more interested in analyzing the full citation graph for my field, which generally doesn't post papers to the ArXiv.
It's not that I am personally concerned with misinterpreting the data. I just think there could be some downsides to releasing the data without limiting access in some way. For one, I think there are already issues with the citation metrics are used and interpreted, for example in tenure evaluations. I don't think it would be a step in the right direction if this data were used towards the same end...