I notice many of my favorite vineyards, Marques de Riscal, Guigal, and such, reputable producers that I've known and enjoyed over the years, have started switching to synthetic corks and screwtops. I rather dislike this. With older wines, I like seeing the sulfites and residue on the cork, a feature the synthetic wines seem to have less of, to smell later, and I enjoy uncorking a bottle and keeping the cork as a souvenir. What's with the change? I find it extremely irritating and less fun. Though the taste is, of course, the most important aspect, I wonder what will become of the cork for usage in wine bottles, or whether it's just going out of fashion.