The main objective of this study is to make a comprehensive analysis of the question "Why is there something rather than nothing?," which is one of the major questions of metaphysics, and to find a plausible answer at the end, if it is possible. To begin this analysis, a clarification of what we understand by this question is needed first. For the clarification, a definition of 'nothingness' will be sought. Afterwards, the motivation for us to ask this question, the significance of it, and the content of it will be investigated. This investigation will help us concentrate on and discuss...