Yeah I’m going to have to agree. The new shirt I got feels almost as smooth as cotton.If your merino wool is getting thin and itchy, it might be time to replace it. You could use the old stuff for less sensitive tasks or just get new pieces.
I’m pretty hesitant about wool bottoms when synthetics hold up a lot longer for base layersI go through merino base bottoms like crazy. They get filled with holes. My tops generally last at least 5+ years