Would you buy a new iPhone every 2 years or 4 years? Why?

If your not a fan of iPhones don't answer please.

Added (1). And would you buy the S models if you don't already own an iPhone?

IPhones suck. I buy a new Android or BlackBerry every six months.

Nope

No, because they're too expensive for me. I usually get Mom's old hand-me-down when SHE buys a new one.

Android only