I don’t have children–by choice–a decision, by the way, that has nothing to do with my Lynch Syndrome diagnosis.
But knowing that one has the Lynch mutation is an enormous ethical factor in deciding whether to have children or not.
Leaving things to chance is like flipping a coin–a 50% chance of passing the Lynch mutation to your children.
But, as of this writing, my understanding is that there are ways to have children without the risk of passing on the Lynch mutation. Beyond that, I would never dare to give specific ethical or medical advice. As always, seek guidance from your doctor and medical and genetics professionals who specialize in such matters.