Back in 2002 'we' laughed at Afghanis who when trained by Western special forces would resist the prone position or crawl in the dust. It was culturally not nearly as acceptable to them as to us, apparently. Well, that is if I remember this correctly.
Here is something militarily sensible which we resist for cultural reasons; porters.
Southeast Asians and East Asians did incredible things with porters during the 20th century, an the use of porters could almost solve the infantrymen weight issue.
Back in ancient times the most heavily armoured Greek hoplites were also the most wealthy ones (save for horsemen). They brought a porter with them; either a slave servant or a young son. This porter functioned at the very least as shieldbearer (the aspis was a rather elaborate shield weighing 7 kg or more for several centuries), and they probably also carried additional equipment such as spear or the very uncomfortable bronze helmet of that era.
A porter does not relieve the infantryman of the weight of the equipment in battle, but he allows him to be less exhausted when it begins. Modern porters could also carry ammunition, batteries and medical supplies, thus reducing the consumables load of an infantryman.
The Western world has largely given up on this model since Marius' mules (the late Republican unitary legionaries). Medieval squires are a notable exception, but squires were for men used to have servants, and -hear hear- supported the most heavily laden warriors, the knights.
So think about this; on purely rational grounds, would porters be a relief for the problem of overburdened infantry?
Next, think about how much the very thought is still appalling to you (I presume).
In fact, we DO have porters in Western infantry forces. Not all men are equal. Some are quite useless in combat and are effectively porters. Except that the bureaucracy still pretends they're full infantrymen and lets them carry mostly their own equipment, not primarily others'.
We also don't totally refuse the use of porters; just think of expeditions in the Himalaya. It's just that thinking of 'our' people as porters is in my opinion a cultural taboo.