One common myth about wine is that you need special wine glasses for each different kind of wine. It is not, however, a wine myth that a lot of people adhere to — probably because so few people can afford to have different wine glasses for each kind of wine. Unfortunately, this seems to create a backlash in which people decide that if they aren't going to have different glasses for each wine, then any old glass is good enough for drinking wine. A little wine glass moderation is needed here.
The single most important thing you need to pay attention to when choosing the right wine glasses is the wine glass shape. The wrong shape in a wine glass will completely alter the wine tasting experience, even to the point where you can't properly examine or smell the wine in order to evaluate it. You don't necessarily need to get a different glass for every type of wine - though that is possible - but you should try to have a different glass shape for white wine, red wine, and sparkling wine.
It makes no sense spending the money for even moderately priced wine glasses if you aren't going to care for them properly. A good wine glass can be quickly transformed into a poor wine glass through incorrect care. Fortunately, the necessary steps for proper care of wine glasses are all very easy to remember and follow.
Yes, wine glasses really can make a big difference in how wine tastes. In principle, you can use anything to drink wine out of and if you're drinking especially cheap wine, it's unlikely that your choice of glass will make much difference. To really get the most out of good wine, though, you should pick your wine glass with care and attention. The more care you give to buying and tasting wine, the more care you should give to having the right wine glasses.