A thing is real if it actually exists. We perceive existence through our senses.
Our understanding of the world alters as we age, thus we can determine that our senses fail to provide an accurate representation of our surroundings.
An incorrect interpretation of sensory input is an illusion. Therefore, life as we know it is an illusion.
The formation of mental images that do not literally exist, is imagination. Therefore, life is imaginary.
If life is fictional, then we need not lament consequence, as life is truly a lighthearted affair.