Right, I think there are just overall more web developers than mobile developers out there (one has been around for much longer), and people who have had real experiences building mobile apps are still in the minority.
Maybe it's due to the phrasing of the question. I certainly prefer native (ok semi-close-ish native, I use Titanium), but I _will_ in the future prefer to be using HTML5, once it's ready.
HTML5 isn't ready yet in my opinion, as it takes too much effort (read: hours, money) and many workarounds to get a polished, fast and responsive app out of it to rival native. Sure it's awesome for fast prototyping, but it's still too hard to get "dat native feel".
I can see two possible reasons for this:
1) Native developers are the more opinionated of the two.
2) People who actually have experience to communicate prefer native