Whether we like to admit it or not, we all think about retirement. But I have enough money to live a comfortable life? Will I run out of money before I die? How much money do I need to save to ensure a comfortable life? For thousands of people, retirement is one of those big unanswered questions. It might not matter too much in your 20s, but the older you get the more it rides on your mind. However, you don't have to live life being...