With an appropriate level of intelligence an AI machine should become self-aware.
I would define life as anything that can operate autonomously, decide it’s own actions, find it’s own fuel, attempt to protect it’s own existence, and seek to survive as a primary goal.
That definition fits anything from insects to humans. And I think bacteria fits as well.
What is the meaning of life? The question is impossible to answer. The term ‘meaning’ implies that information is being communicated. And that implies that something intelligent is initiating the communication.
Since the most intelligent entity that we are aware of is human and since humans have yet to create life, at least no bio-life, then nothing on the planet can have attempted to communicate a message through the creation of life.
If life was created by some other being then we still cannot know what the message is since no such beings have come forward to announce themselves.
Either way if there is a meaning to life we cannot yet know what it is, and if life evolved and was never created by an intelligence then the question has no answer, or rather the answer is that there is no meaning.
Even if we create machine life would the question still make any sense? I don’t think so. Life is not about communication.
A better question might have been – what is the purpose of life.
Cris