In reply to:

With all due respect to you as a person, my belief is that gay couples should not be allowed to adopt children.


Clearly you don't think I'm due much respect.

In reply to:

If we put normal children in gay households, and the environment makes them gay, then we have harmed that child.


That's assuming that being gay is harmful/wrong. The only harmful thing about being gay is having people like yourself tell you your entire life that there's something wrong with you.
In reply to:

or has some other incurable, medically valid cause...


Does being attracted to and falling in love with a person of the opposite sex also have a "incurable, medically valid cause"?