There are hundred's of articles and studies that claim that green tea has health benefits such as preventing cancer, stroke, heart disease and even helping with weight loss. Whether or not you can rely on such information is a personal choice and does require your own research. Though if you look at the low levels of heart disease, obesity and the high average life expectancy in Japan and then look at the huge amount of green tea that they consume a person can only wonder about the connection.
We drink green tea because we do believe that it contains high levels of antioxidants and if anything is contributing to our health and helping to fight off disease, we also find it to be very refreshing.
Green tea can have an earthy and sometimes bitter taste so it is not a tea that everybody likes to drink, but do not let that put you off, there are many ways that you can lessen the bitter taste such as ensuring that the water is not boiling, keep it at about 80ºC, and brew for 30sec-2 minutes, though you can increase or lesson the time based on your own personal tastes. Also remember if you are brewing leaves in a teapot that holds more than one cup not to leave the leaves in the pot while you have your first cup, you should pour out all the tea (into another cup) after it is brewed otherwise you may over-brew and your second cup may not be as nice as the first.
If you find that you still do not like the taste then a great option is to try a flavoured green tea, adding different flavours, such as mint or jasmine, can really make a difference, it then also means that you can enjoy all the great health benefits of green tea and a great taste at the same time.