Your DH is a whiney little b*h.
Saw this advertised on Facebook, and this really pissed me off. Specifically created an account just to respond to this and call your husband out. PLEASE show him my comment.
I was an infantry soldier back in the late 80's, stationed in S. Korea, where we spent something like 250 days a year out in the woods playing Rambo (field exercises), with 18 hour days being the norm, with such joyous activities like doing guard duty at -70 degree Fahrenheit to running around in a MOPP suit during 110 degree weather (and I literally mean running, as you'd be in a field exercise), while carting around a 26-pound machine gun (I was an M60 gunner) and a 50-pound rucksack.
You'd get an average of six hours of sleep per night, with a 2-hour guard shift somewhere in the middle of it. When we weren't out in the field, we'd work six days a week, with physical training at 6am, then working until 8pm, Monday through Saturday. At one point, I worked a 90-day stretch without a day off, and also did a 72-hour work shift without sleep.
Short version, when your husband complains about his manual labor job, I wouldn't be surprised if being in the infantry would have made him cry like a little baby.
Yet that was NOWHERE near as tiring or stressful as my last job in the hotel IT industry, working in a luxury resort, where the constant stress, low-grade abuse (from higher ups, entitled co-workers, and guests), and the daily threat of getting fired for the dumbest and pettiest of excuses had me legitimately thinking of suicide at one point. My wife and I at the time had a mortgage and two cars, but I seriously wanted to just walk off the job and go flip burgers at McDonald's because I absolutely could not stand the constant and consistent mental anguish. Homelessness sounded preferable, and only my wife's threat of divorce kept me there.
Being an infantry soldier during peacetime was definitely physically demanding, I'll admit that, but there was almost zero stress. I wasn't deployed to an active combat zone, no one ever shot at me, and while I was physically exhausted on a consistent basis, that physical exhaustion went away any time I got a decent amount of sleep.
On the other hand, constantly having to worry about my job, my livelihood, and having to perform like a trained monkey, presenting my best, most professional face, and keeping everyone happy with me when I couldn't always help them with their own stupidity was endlessly grating. Having to carry my cell phone and laptop with me everywhere I went, no matter what, because I was constantly on call (and actually getting a call ON MY HONEYMOON, which I had to answer, and which required me to work for an hour while my new bride was waiting), was soul destroying.
When you have a job that is a constant drain on your mental health that just consistent wears at you and beats you down, there is no real recovery from that until/unless you quit, and even then, it can have long term effects on your mental and physical health. Stress kills. There's more than enough documentation about that online.
Not saying DH's "physically demanding" job isn't tough, but to belittle you for having a stressful job is absolutely ignorant.