First of all, to understand life, the universe, and everything, you must ask yourself the following questions:
1. What is life?
2. What is the universe?
3. What is everything?
The answer is pretty simple, really. Life is basically a wonderful thing, if you actually have it, as such. It is basically a selection of the best things possible under a certain framework called 'The Universe'. This framework is basically nothing but a container, in which certain things exist to ensure the safety, wellbeing, pleasure, and continuity of a certain individual called God. If you are not God, then you clearly belong to the 'everything' category.
P.S.: It is a common mistake to consider God as an evil being for creating such a system. However, if you do take a closer look at things and how they are, you will undoubtedly understand that God is just this Great Dude, much like the Great Gatsby, who would never harm a fly. Why flies are constantly swatted is an entirely different subject matter and, it may come as a surprise to you, but they are not really swatted when they are swatted. It is simply a reflective reality in which certain possibilities are kept alive through physical images that reflect the true nature of the Universe, before God decided to put some order into it.