I agree. Prior to this I had a 2003 Ford F-250 diesel which was my everything truck for over 11 years. Not cheap and a rough ride for a daily driver but it did anything and everything I needed/wanted.
I don't have any need to tow or haul heavy any more so bumped down to a 1/2 ton. If I was concerned about weight (hauling and/or towing) and was deciding on options based on how many pounds they would add to the truck (and reduce payload/towing) I would be looking at a 2500 in my budget rather than a 1500.
It doesn't take a whole lot of options before GVWR becomes a concern if you've got a family, gear, supplies, and tongue weight you're taking into consideration.
My payload is 1426 lbs. If I do a weekend jaunt somewhere that's me (I'm not light), my wife, two kids, and two dogs...roughly 700 lbs or a little more. That leaves me about 700 lbs for supplies/gear and the tongue weight of a trailer. Not a problem for supplies and gear but leaves me little room for tongue weight (roughly 10-15% of trailer weight). There's no way I can get close to the 8100 lb towing capacity if I want to stay on the safe/legal side of things. Obviously not everyone has as many family members or pets so are not in the same boat as I am.
There's more than one thread on here about someone believing the salesman who goes strictly by towing capacity. When you start breaking down the payload numbers and looking at GVWR and GCWR numbers you may exceed what you want/need your truck for.