Correction:

Most people who get breast cancer, don't have the exact family/genetic
genes, for which the docs are looking.

Should be:  Most people who get breast cancer, don't have the exact
genetics, family genes, for which the docs are looking.

Susan, Su_Texas  my opinions

PS  I apologize for switching the words around sometimes.  [Strokes]

Amy wrote: <<
decision of knowing because I have a daughter, and knowing that I could have
passed on the mutated gene is hard to live with. >>

Hi Amy, I understand your concern.  I come from a very extensive history of
familial breast cancer--which includes not only my father's mother, but my mom
and her sister as well as 3 of their first cousins--all first cousins to each
other--one died at the age of 28, another died at the age of 31 and a male died
in his 40's.  In addition, two of the cousins' moms  died of breast cancer
(aunts to my mom and her sister).  I still tested negative for all the known
breast cancers but all my dr's feel that something genetic is going on--and
that not all genes  have yet been identified.
However, had my parents been aware of a gene--and whether or not I had it--I am
still glad I was born.  I have 3 daughters.  They have even more of an
increased risk because my husband's mom died of breast cancer.  His first
cousin was dx'd with breast cancer and 10 years later with pancreatic cancer.
His aunt, also an aunt to above  cousin, died of pancreatic cancer.
I would not have done anything differently had I know that I had the gene or
that my husband carried it.  Hopefully, they will be careful anyway and take
all necessary precautions.  I wouldn't be overly excited to learn that they did
have a positive breast cancer gene.  However, at the same time, if one was
found it would diminish some of the guilt that I have regarding being able to
have done something differently.  I would not have done anything differently
other than maybe having a prophylactic bilateral mastectomy after I finished
nursing my youngest child.