It's the same with a lot of the polls........and it usually gets a strong response on the forum from people who feel there is a missing option.
And also,usually, a strong rebuke from the FE ;))
I tend to look at it this way.....If the poll is there with an article in the magazine in mind, it is after answers from people with a definite opinion.
"Not interested" wont make good press.
If the not interested category fits my response then I don't respond to the poll.