I've ran aftermarket bumpers for the last 10 year on Land Cruisers. IMO, the weight is a small penalty for the protection, assuming you roll trails often. That's only 2.8% of curb. Though I'll give you that it is a slippery slope... add WK sliders and you're now almost 500lbs into armor, a full 1/3 of your payload. And certainly, if it's just for looks then there's diminishing returns on that penalty.
We're putting an Ironman Commercial bumper on my wife's Lexus LX. It's truly a 'mall cruiser'. But she also runs a 400 mile RT over Santiam pass twenty some times per year and I want it for two reasons: 1) wildlife protection and 2) hard point for aftermarket lighting. I want her to have the confidence to roll through a deer with impunity rather than have it potentially total the vehicle. Or worse yet, the temptation to swerve. And in dark/rainy Oregon weather I want some bright aftermarket road lights on the truck to keep her between the paint.
One other item to consider is the airbag compatibility. In the 'overlanding' world (heavily biased toward Toyota, Nissan, and Land Rover) the big names in bumpers (ARB, Ironman) crash test their bumpers for airbag performance. They have designed in crumple zones and have proven to trigger airbag deployment within MFGR specs. No domestic bumper manufacturer that I'm aware of does this. They may perform FEA in CAD but this is way different than destroying a truck in a crash test. This doesn't imply that aftermarket bumpers will make you less safe, its just that they're not proven to be safe. The exception would be AEV. Those guys spend the $$$ to be certified as and OEM provider.