and i'm sorry you had to go through this. you're right -- it seems terribly unfair -- and (in my opinion) unethical.
this isn't the first time i've heard of some christian denominations not considering catholics christians.
i looked into adopting from haiti but most of the orphanages were run by christian missionaries -- i'm jewish. so their response was that it was better the child be in the orphanage than to be raised by a non-christian. ?????
hang in there, and i'm sure you'll find a way to make your dreams a reality.
best wishes!