But I don't think it's fair for anyone else to grab all that data and use it for other purposes.
Why not? Wouldn't the exact purpose be a determining criteria in that judgment? What if, for example, I use a smartphone that doesn't have an official Facebook app for it, and I want convenient access to my friends' phone numbers and emails from my phone, so I can call and email them. Assuming they actually are my friends in the first place, calling and emailing them is a perfectly normal thing to do. But why should I be limited by Facebook's constraints in terms of how I can access their contact info?
Use your imagination, and I'm sure you can come up with plenty of our perfectly valid reasons why somebody would want to use info about their Facebook friends, outside of Facebook's insidious walled garden.
Why not? Wouldn't the exact purpose be a determining criteria in that judgment? What if, for example, I use a smartphone that doesn't have an official Facebook app for it, and I want convenient access to my friends' phone numbers and emails from my phone, so I can call and email them. Assuming they actually are my friends in the first place, calling and emailing them is a perfectly normal thing to do. But why should I be limited by Facebook's constraints in terms of how I can access their contact info?
Use your imagination, and I'm sure you can come up with plenty of our perfectly valid reasons why somebody would want to use info about their Facebook friends, outside of Facebook's insidious walled garden.