<human>: I am a 31 year man who recently found out I have a medical condition called  azoospermia, which basically means my sperm count is zero. 

I am about to get married to a wonderful 35 year old woman who has three kids (18,13, and 12 y/o) . My fiance and I have been living together for two years and dating for three. 

Yes there are things I can medically do to diagnose the cause and maybe even produce viable sperm but I don't really see it as a priority right now. 

I feel a conflict between letting my parents, who are in their late 50's and want grand children, know the truth or just keeping the knowledge to myself. My fiance knows about my condition and also a few close friends. 

Anyone have experience with something like this or have thoughts either way on telling my parents the truth or just giving polite answers to questions about children like "It's in God's hands" or something like that.

Summarize the given text in a few sentences.
<bot>: I (31m) have zero sperm count and I am getting married. Parents and family asking about children and I haven't told them about sperm count issue. Don't know if I should tell them the truth.