It could get overly scientifically technical. It could get excessively personal, exploring small questions instead of big ones, a complaint that many critics have about contemporary fiction. Time will tell. I don't think it will get less popular, because each year fine new work is produced, and the best of the genre's canon remains in print. Contemporary society has lost none of the sense of loss and grief that has been a psychosocial hallmark of the modern age.
Nature is a tonic for the soul.