Nobody's fault but mine

Today I read an article about whether gay couples can adopt children or not. The  article seems to make sense. It says that it can cause anxiety when the child imitate the behavior of the parents who deviate. Otherwise, another opinion says that  the child after developing adult will have his own way  and act with its own personality. The influences don't come only from the parent, but also from the neighbourhood and school.
Introspection on myself, my parents are normal people. But I grew to like this. Then, whose fault is this? Nobody's fault but mine, I guess.