mules will always have a place on some farms, their a plenty of mixed farms (IE 3-400 acres, arable but with grass in the rotation to build soil / control weeds etc) who may have a flock that some years needs to be 50-ewes others grows to 250 then down again, and the mule fits the bill for this perfectly - easy to buy, easy to sell, on the whole most people understand it, and they tend to be pretty flexible on feed - so do well on grass, turnips, grains, anything you have, whereas some breeds that are great for grass only, just run to fat on mixed feeding - thats my expereince of Lleyn and their crosses anyway.