interest. 1  the feeling of a person whose attention, concern, or curiosity is particularly engaged by something: She has a great interest in the poetry of Donne. 2  something that concerns, involves, draws the attention of, or arouses the curiosity of a person: His interests are philosophy and chess.
There are lots of variables regarding the wine type, method of production, age of bottle and on and on. There are all those considerations and exceptions but for 95% of the wine that most people drink, the answer is pretty simple. Three (3) days. Around here, we keep wines up to 3 days after the bottle has been opened. Once a bottle of wine is opened, the oxygen in the air starts a process that initially softens the flavors and opens up the aromas of the wine.
Agreed, a properly stored corked bottle of wine will last for several years. Some varieties are best within the first few years, they tend to be the cheaper wines. There aren't many wines that benefit from aging for more than 5 years. Among those that can age that long are the very tannic wines, like Cabernet Sauvignon.