It is now possible to buy balls of wool in all colours and textures some may have seen a sheep at some point in their existence; others clearly haven’t.
A problem definitely not, a lot of the acrylic based wools are easier to knit with, softer to touch and wash very well in a machine without the risk of them shrinking. Not to mention in general cheaper. So have these replaced the natural textures. Definately not. Although more expensive, and require specialist cleaning to stop them shrinking the results of knitting with modern wool and silk based threads can be breath-taking when complete and ideal for any special occasion.
The variety of colours and textures available in wools means that it is easy to knit a number of striking garments from the simplest of patterns and they will always look original and breathtaking. Below are some simple squares knitted with a variety of different yarms for you to see what I mean