Both scenarios you identified UPTOWNE (tricked into marriage by saying baby is yours/infidelity leading to conception of another man's child) are ones I have seen among family members as well as friends and acquaintances. More often, it has been the former.
That sentiment you offered (no problem raising another man's child for it will always be [your] baby) is the one I have noticed and possibly is the reason I began this particular thread. It seems that many men decide to simply overlook the circumstances and go ahead and pretend that they fathered the child, and allow the child to grow up thinking that their stepfather is their biological. On the surface, this seems a noble and honorable deed. However, a disservice is done to the child by denying him/her his/her RIGHT to know the true identity of his/her biological, regardless of what type of man he may be. A disservice is also done to the biological father, particularly if he has no idea he has fathered the child (I know of such cases). The child grows up searching in futility to answers about why he/she looks and IS different from the rest of the siblings and parents even, and thus goes through a lifelong identity crisis. I have witnessed this happen in my own family.
In addition, just because she has stepped out on you during your marriage, does that really mean she necessarily loves the "other man" who fathered her child?
That sentiment you offered (no problem raising another man's child for it will always be [your] baby) is the one I have noticed and possibly is the reason I began this particular thread. It seems that many men decide to simply overlook the circumstances and go ahead and pretend that they fathered the child, and allow the child to grow up thinking that their stepfather is their biological. On the surface, this seems a noble and honorable deed. However, a disservice is done to the child by denying him/her his/her RIGHT to know the true identity of his/her biological, regardless of what type of man he may be. A disservice is also done to the biological father, particularly if he has no idea he has fathered the child (I know of such cases). The child grows up searching in futility to answers about why he/she looks and IS different from the rest of the siblings and parents even, and thus goes through a lifelong identity crisis. I have witnessed this happen in my own family.
In addition, just because she has stepped out on you during your marriage, does that really mean she necessarily loves the "other man" who fathered her child?