The thing is.. most phones aren't stolen for their contents, they're stolen to sell on and make money. They don't give a stuff about PIN codes etc.. it gets sold cheap to some guy in the street who re-images it and sells it as 'second hand'. Any thief knows to power off a phone when they steal it otherwise it's traceable.
The resale is often in a completely different country to the original, to defeat national blacklists (which will defeat remote wipe as well, not that it matters because it will have been wiped before resale).
If you're storing things that people might actually want to get their hands on, like corporate secrets, then your company will pay for the security measures required. The more security you want the more it costs... but for home users a simple PIN is fine because the only thing you're really stopping is your friends breaking in and having a laugh at your expense.
The resale is often in a completely different country to the original, to defeat national blacklists (which will defeat remote wipe as well, not that it matters because it will have been wiped before resale).
If you're storing things that people might actually want to get their hands on, like corporate secrets, then your company will pay for the security measures required. The more security you want the more it costs... but for home users a simple PIN is fine because the only thing you're really stopping is your friends breaking in and having a laugh at your expense.