Honestly, we've NEVER bought insurance on our phones, and have been better off for it......the phones have always had a 1 year manufacturer's warranty, that we could have repaired at the store anyway (which Sprint has taken that away from what I understand....if I'm reading it correctly to have warranty work done in the store if you don't have the insurance, it will cost $35)
So then, we took the risk of not losing the phone, or dropping it, etc....but we figured out with 2 phones on the account at $7 each a month, the math worked out to $14 x 24 months = $336, and then if we had to use it once, it's another $100, therefore costing us $436 for the insurance for 2 years.
We have had Palm Pre's for a year now (so at this point the insurance would've cost us $14 x 12 = $168 plus an additional $100 if we needed to use it once......you can find Palm Pre's for $50 - $100 on Craigslist now, our phones are still doing fine, so we are already ahead by not having the insurance.....
So due to depreciation, we always took the risk, and figured we would use an old phone or find a replacement on Craigslist to get us through if we needed it.....
But now with Sprints new warranty policy, it may make more sense to get the insurance (especially since I'm looking at getting a Sprint Epic, which at this point I haven't even seen on Craigslist, best I found was a Evo for $400)....so with a better phone, I will consider it more strongly.....
but with the way of the changes, it feels to me that it's a way for Sprint to make up more money from people like me (honestly, I don't blame them, they have the cheapest plans around, but I don't see this as a bonus from Sprint)