I've been very careful of my iPhone 6 and I check it every couple of days to make sure it hasn't been bent, but that doesn't mean that it won't bend eventually. I don't believe all these people who say the iPhone won't bend by simply being in your pocket because it's not just your pocket that is causing the bend, but the force between your leg and the fabric of your pants put pressure on the phone itself. Numerous times, I've seen my iPhone turn completely 90 degrees in my jeans pocket and if I sit down like that, I can see and feel lots of force being applied to my phone as my leg acts as a focal point and the top and bottom of my phone attempt to wrap around my leg as my pants get tight and stretch over the phone.
Tell people to stop implying that putting a phone in your pocket won't make it bend.
You're right. Phones don't just bend just sitting there, but there are "normal" situations that might accidentally cause it to bend where phones that came before it did not. Sitting down with your phone in your pocket is not something that is abnormal in my opinion.