Should this man father children (naturally)?

I recently read this on the BBC website regarding a man with Treacher Collins disease who is battling with the decision about whether or not it is fair for him to father children naturally.

Treacher Collins is a hereditary disease that isn’t life threatening but Jono admits that his condition caused him years of anguish which, obviously, he wouldn’t want his children to suffer.

His girlfriend isn’t keen on adoption.

What are your opinions on this. Should this man risk passing on the disease that has caused him a great deal of anguish?

I’m not sure what my opinion is to be honest. It seems that this man would make a lovely father from what he has said in the link but I can’t imagine growing up with such a condition is much fun.