Hell no. I wouldn't carry my phone across my living room without a case.

I use it at work (hospital, so wet, slippery areas, tile, etc.), I take it hiking, camping, limbing, running, use it in the garage/workshop, etc. I would have broken it 100 times in the last year alone.

I also don't care for the feel of the phone without a case. It's sharp and uncomfortable to hold.