For those struggling with existential questions, it is natural to ask, it is responsible to have kids while oneself is struggling with meaning and existence. reddit discussion
I struggled with this question, well, in early adulthood, I eventually accepted the following rational.
Remember the vast majority of people enjoy life, regardless it is meaningful or not in a logical way. It is likely, probably that your kids will also enjoy life and appreciate your effort to give birth to them and raise them.
Making the choice for your children reflects your current state of mind and personal opinion. Leave the choice to the child. Raise them with a positive attitude and let them decide for themselves their take on life.
Despite the fact existence can be absurd, we would not argue it is also a divine gift. Given your children an opportunity to know it, feel it, finding their love, passion and make their own choices.
Meanwhile, stay positive, our own state of mind will change and we will be, at least probably will be, happy with the positive choice.