So please tell me, am I missing something? Is there a reason that wool should not be my undershirt of choice? It cools in the summer, warms in the winter, never stinks and wicks moisture from the skin. SmartWool also makes an A-shirt but that doesn't protect from sweating through the armpits of a shirt.
And if it agreed upon that wool is an acceptable undershirt material, does this shirt exist? If so where?
While searching for this information in threads already started I have come across a surprisingly high number of people that HATE undershirts. That's fine, please don't say "stop wearing them". I'm not going to stop wearing them. I'm not sweating through the armpits because I'm fat, out of shape, or have over-active sweat glands. I'm sweating through because it's 120° and I don't spend my time exclusively indoors, behind a desk, or around climate control.