Do not get the religious bullshit get into your head. Religion is just something man made.
But in Africa we begin to view such children as illegitimate child. But the big question is that does God also view that child as illegitimate? I think the answer is no. Because if God sees that child as illegitimate then He will not bless that child.
From this, I gather that you might be from Africa. If I may ask, before the European colonizers invaded your land by first sending the Missionaries and their religions. Should we say all your Great Great Great forefathers who were born out of "wedlocks" were all illegitimate?