To add to the discussion, other than costs, there are no downsides to having breaks. You can use them or not, as you choose.
One benefit not mentioned is that you can get parking breaks on some e brake set ups, and I have found parking brakes to be very, very useful.
As far as wiring up a JKU, its not difficult and Mopar offers a seven pin plug and play harness that also retains the factory four pin. There is no controller plug and play harnesses available, but the wiring is easy according to posts on Jeep forums and according to the guys that installed mine. The Prodigy P2 is the controller I got, and it allows mounting in a wide variety of positions. Mine is mounted to the right of and below the steering wheel and is inconspicuous. I can easily reach the controler to adjust and can activate the hand control as well without issue. The controller can be moved between my JKU and my 2500 Suburban as well, and there are plug and play controller harnesses available for my Suburban, your Ram truck and other more common tow vehicles as well.
Regarding the JKU brakes, I have found them entirely satisfactory and do not find my JKU under breaked, even with a Hemi engine, 37's and the added weight of aftermarket bumpers, winch, aluminum skids front to back, a small Engel fridge, a srorage box in the rear. Or when towing ~2,000lb breakless trailers. When my oem brakes wear out, I may upgrade, but only because the upgrade costs so little more than going back with oem.
JPK