I agree. Wool rarely fails. If it does, it is only after wearing it a LOT. I have used UUL Ibex for 5-6 years, between 30-90 nights per year. The only complaint is that it does get a bit streached after a while, especially wet, the wrinkles can bother me, but this is one of those wierdisms I carry around I guess... Base layers should be nearly skin tight. Smart will lights are almost as good, just a bit heavier. Capaline has no real smell of its own, but will build up my own on longer trips. Silk I used for many years for skin tight base layers inder fishing waders in winter (steelheading.) Nylon/Spandex or poly blends don't have the warmth of wool for the weight. The UL weights don't seem to do much beyond the older silk, but, they do dry faster.
Wool for a base layer or insulating layer in corse weaves with guard hairs is just good in every category. Yes you can beat them in any one, at the expense of another. But, wool is well balanced, overall.