Should a Man and Mother Have a Nurturing Relationship?

Today, we went over a prompt which discussed the question above, and I personally disagree with it. A man has no obligation to take care of his mother after he is an adult, she brought him into the world and he is simply the byproduct. Also, what if the mother is anything but motherly? Should the man still nurture her? Blood ties do not equate to true family, only the bonds that are made, at least to me. Mr. Rease challenged us to talk to our mothers about what we discussed today, but I would rather not; I would like to not be backslapped.