I have both a 1/2 ton for me, and I'm on my 3rd one ton for work....
The 1-ton crashes over potholed roads, stops longer, steers slower, and is nowhere near as nice to drive.
I'm not sure the logic that some use that when hitched up it will become some magical stopping and handling miracle. They just aren't.
An F150 with trailer sway control, ABS, VSC, HD package, huge ventilated discs, and properly loaded right to it's GCWR is a perfectly acceptable tow vehicle. Not for the "bigger is better" crowd, but definitely for those who daily drive, and don't want the "oxcart on a donkey path" feeling 1 ton trucks deliver.
And for the 100th damn time, an F150 with a 2500# payload is not a "half ton". If it is, then a Ram Laramie 2500 is a half ton.