I don't personally like jquery mobile because I don't like one-page apps, or indeed, any framework that dictates how I organize my application. Though it may be an unpopular opinion, I dislike the whole convention over configuration theme that's popped up during the RoR popularity phase. Not only can my IDE write out any boilerplate, but I can also search for the linkage, and all that without making 80% of my application easy at the expense that 20% will be hard or impossible.
Now, most of the applications I end up writing are fairly complex, don't need fancy animated transitions from page to page, don't require touch/multitouch interfaces, so maybe I'm not the intended audience.
Really though, it's up to personal preference.