At the supermarket and the wine stores we have around here you can either get a full bottle or a quarter bottle. The number of quarter bottles seem to be growing. Maybe because people hear that a glass a day is good for them. I wish half bottles were more popular. A full bottle is usually too much for me, or for me and a date who would just like a glass or so with a casual meal. I have never been a fan of saving wine once opened. The little quarter bottles to me are kind of cheesy. Like what you would find in a mini bar or on a plane. Also not enough.
Out of the very few half bottles around here more then half are sparkling wines. To me sparkling wine never tastes right in anything less then a full bottle. Just my luck sparkling wine is just right in a full bottle for me.
Just an observation. Please don't kill me.