Every review I have read has talked about how big this phone is compared with their old phone. The iPhone 6 plus weighs 6.55 ounces with the cheap bumper case that I bought to hold me over. The iPhone 4s weighs 6 ounces in the LIfeproof case. The weight feels about the same to me.
I wear XL and sometime XXL gloves and I can just barely touch my thumb to ring finger when I wrap my hand around the iPhone 6+. As a result, it does worry me a bit that I may end up dropping it. To be honest, I have always been concerned with this, which is why I have always used cases. I did buy Applecare, so I guess I am covered for a couple of mistakes.
The screen is absolutely beautiful on this phone, which is really where it pays off to have the larger size. I have a "desk job", which means I can have the phone out on my desk and I can have access to it with two hands most of the time. I plan to put it on some sort of stand and use it for music, checking email and other quick tasks that require internet access during the day. I am curious to see how battery life holds up while streaming music. I have a bluetooth receiver at work, so I usually stream from the 4s, but it has to be plugged in or it would die long before I left work. If I can leave the 6+ unplugged, it is just one step I can skip when I leave the desk with the phone during the day.
In addition to the screen, I also bought this phone over the 6 because of the camera. I will probably have a more thorough review of the camera, but here is a slow-mo video of a bee in flight to show how the video works: