I think that's an insulting generalization. People can be homosexual even if they grow up in a loving family, they don't become homosexual because of problem with their families. In contrast, a loving family is the best atmosphere where people can accept their selves and comprend that they are homosexual.I think I should respect them, but I never support them in adopting children. Can't experiment exposing children to such other upbringing. And besides, how will these children later start their families?
They will be confused.No one will be confused if the parents tell them that there are not only straight people, that there is a variety in life.
I don't know if just saying them is enough. I have not heard that adult homosexual children had the same parents before ... Their difference is usually due to the lack of a father, the lack of his love. Excessive dominance of e.g. mothers can also be.