‘At what age do you think it is appropriate to inform your children that they have no legitimate purpose in life and that no matter what they do it will be for nothing?’
I have sympathy for anyone that possesses such pessimism when contending my world view. If a road has an end, why shouldn’t I enjoy the ride?
Do such parents use the same logic when they are watching a movie or reading a book? Playing in a water park or listening to an album? All of these fun activities have an ending, an expiration date. I would never be selfish enough to tell my children, if I do one day have children, to refrain from enjoying our precious time on earth because one day it will be gone. If anything, each splash in the water park will be cherished greatly. I have more reasons to take my children places. To be that hurt by such a prospect that you inflict negativity onto your children, that is a very shitty move.
Be a better parent than that. Maybe then children won’t have to worry about what their parents think and of their own personal choices in life. Sadly, too many adults punish children for not fitting into the family ‘criteria’.
Your preferred view of this world will not effect reality but if you let your children be free to make their own decisions, their lives may one day change our reality for the better.