Andrey does a great job of sharing some of the reasons it’s best to choose a native platform over something like Titanium.
I guess we all go to our comfort zone when it comes to life, and that holds true for software developers as well. I prefer to use the platform tools, so I have a history of writing in C, C++, and now Objective-C. Yes, it’s painful to learn a new platform, but I think it’s worth it.
UPDATE (8/26/2012, 2:20PM)
Branch: A Blow To HTML5: “Facebook has now largely moved away from HTML5 in favor of native Objective-C code with their new iOS apps. And the results speak for themselves. Facebook had been one of the companies that most vocal in their support of HTML5 as the future of everything. The apps suffered as a result. And now they’re changing their tune. Is HTML5 still just not ready for prime time? At least on mobile?”
I guess the bottom like is, I believe native is a better choice, at least for the foreseeable future.