Hmm, yes, silversurf, jeggings are definitely more comfortable than jeans but it's not the same somehow. I currently have three pairs of jeans, all blue, which I wear on a 'slim day' (there seem to be fewer of those than there were) otherwise I live in jeggings of which I have embarrassingly too many to count.
Incidentally, I have just returned from MandS where I hoped to find some smartish black trousers with a stretchy, as opposed to elasticated, waistband. To my amazement they have a whole department of stretchy trousers with stretchy waistbands, so perhaps it is not just me that is expanding round the waist!