I complain about plastic corks, and I wish the low-end French wines would switch to screw-caps. Plastic corks tend to fail under any kind of environmental stress, and they are hard on corkscrews. No one keeps that kind of wine longer than 6-12 months anyway, so in my view they have no advantages over a screw-top. Germany and New Zealand see this.

But plastic corks will probably stick around, because they seem to give folks the illusion that they are doing something special when they open the bottle.