I like wool yarn, smooth, soft and bouncy, woollen, worsted, a little unevenly spun, it doesn't matter, as long as it's wool. I like to spin wool, I like to knit with wool and I like to weave with wool. I'll use wool/nylon blends for socks and I don't mind using commercial cotton for tea towels and such.. While I like soft, cushy wools, I also like medium and some coarser wools. I'm not horribly biased when it comes to sheep fibres. I'm pretty sure it's a very tactile thing.
Silk noils for instance, just feel wrong. They are dry, feel coarse and harsh to my hands. I made a dress once, from silk noil that I could only wear with a full underslip. Luckily it was an Italian Ren, style so I needed to wear a full camecia, which masked the feel of the noil. I made a generic Saxonish style tunic from it as well, which was never worn due to the icky feel factor.
So, I decided to work way outside my comfort zone and do some practice blending, making enough yarn to actually do a project with. I didn't even decide to weave with it because I felt that would be cheating a little bit, so I planned a pair of mittens.. I had to push through the project. The carding was probably the best part of the deal because though it took a long time, it was fairly mindless. I used a blend of Llama, Coromo and Silk Noils. I watched an awful lot of Star Trek TNG videos ( thank you Santa) while carding. The spinning was okay except that the fibre kept hanging up on the noils and drafting was a bit of a pain. The knitting of the mitts though was horrendous. My hands felt not only cramped and sore the whole time, but it was as if the noils sanded down my hands and dried them out so much so that I needed to use hand cream every few rows. However, after way more hours of knitting that I expected - mittens are a fast project right? These ones took me nearly 30 hours to knit.. egad..