There's an awful lot of fuss about how wool takes horribly longer than synthetic to dry. I own tubs full of both, and have soaked both materials and then seen how long it takes them to dry. In the pleasant 30-40*F rain I seem to find myself hiking in somewhat regularly, both synthetics and wool are still a bit wet in the morning if I just hung them or tossed them in a pile.
If I keep the wet layers on, whether wool or synthetic, my body heat dries them in a half hour or less. Consider wearing base layers in a VBL... wool or synthetic, I layer up over the damp baselayers and things're dry in 20-30 minutes. I have used and compared wools and synthetics well below 0*F, so yeah, these are things I've experienced rather than armchair quarterbacked.
My recollection of that study was that there was a 5-10 minute dry time difference. Honestly, you won't notice that in the field.
People talk about wool pilling. Guess what? I've had plenty of synthetics pill, too! Wear any material long enough and it'll start to show, um, wear.
The talk about extended bad conditions is funny. Yes, I regularly travel in days and days of cold and wet. I find myself more comfortable... and equivalently dry... in wool. I have not found that my wool stays wet for days, at all.
I would note that synthetic shirts exacerbate evaporative heat loss. If your synthetic shirt gets soaked and dries super quickly in cold conditions, it'll likely cool you more than a wool one would. That's part of the temperature regulation benefit of wool. Some similar points in warm weather.
So much for logic, eh, Roger? Come on, now... geese get turned into food, do you take that to mean down doesn't work? That argument is... demonstrably weak. I find it amusing how much of the materials & insulation development we see ultimately tries to mimic the natural world. Maybe there's something to that thousands (millions) of years of evolution that we haven't been able to best in the past 100 years.
I have several tubs worth of synthetic clothing. Since buying my first merino wool pieces, the synthetic stuff has stayed in the tubs, in storage. No reason or desire to wear it any longer.
There is only one condition for which I've still sometimes found synthetics preferable: paddling in bad, cold weather without a dry top. A 100-wt fleece seems to deal with lake water dribbles up the sleeves a bit better. That said, I've been fine sticking with wool in similar conditions.
It's amazing that our ancestors, the world 'round, even survived all those centuries in horrid conditions without synthetic clothing. Oh. Wait. They did have wool...