Durability of a piece of gear ALWAYS wins over light weight. If something does not meet your expectations for a piece of gear, then it needs to be changed. Especially if it is not durable enough to be reliable in the field. If it breaks in the field, then you are carrying dead weight, at a minimum. You could be inconvienced or it might put you at risk.
Many years ago, about 10-15, I kept believing that light weight was the clear winner. On one trip I destroyed my alcohol stove with an arm load of wood that bounced on top of it. Even cutting away the bent portions did not work that well. I ran out of fuel with two days of pasta, rice, oatmeal and bisquik in my pack in the High Peaks (no fires.) Supper was no fun and breakfast was not much better.
Water jugs are about the same. I had a older platypus leak. I carry one for those times I need water for a long stretch, but otherwise, I do not use them. A soda bottle works as well.
Anyway, these are a couple examples of durability problems. I rarely use my little stoves anymore, too fragile. I bring the old SVEA. No pump and only one seal. A very durable and reliable little puppy. Fuel is often one or two 8oz orange juice bottles. Yeah, I pay in the extra ounce for the security of having some fuel. Two 500ml bottles are safer than a single one 1L bottle. I fell on my ti pot and cracked it...went back to aluminum. Aluminum dents easier, but a similar fall would have just crushed it, not cracked it (I stuff it with my firmly rolled rain jacket rather than trust it, though.) Ever get lost going to the bathroom at night? I use a hair tie looped to my wrist, under my sleeve, at night. I bring two lights, a little waterproof Impulse and an e-Light. One or the other will always work. A small threaded needle with about 3-4 yards of thread will patch most clothing, tarp, bag and pack. 3-5yd of duct tape will handle other general field repairs. Other tricks I have picked up over 35-40 years or so. Mostly clothing lasts pretty well. It is fairly durable. I have worn out a couple sets of rain wear. But I don't worry to much if "I" get wet. I need a dry place to bed down, though. My fishing rod is usually rubber banded together, keeps the tip from breaking.