Communication/languages are not immune to the conception of ideas that can't be observed. Asking/answering questions is an interhuman and intrahuman phenomena which is driven by biology/chemistry/physics/DataTakenFromTheEnvironmentAkaObservation (the first three are dogmas I've put there to help you get the idea). Your question has no universal answer and is really just part of what you would call a social phenomena.
The coherence of an answer is proportional to the coherence of the terms used in the question.
''Life'' and ''Purpose'' are not coherent terms yet they are used as fixed values in your question. Your question will not converge into an answer when it comes to reality/interparticular relations.