As far as their keeping their own names, we are in agreement. The program has an automatic function when loading GEDCOMs that puts married names in 'Current last name', which is annoying, but one can fix that.
But I do think and feel very strongly that spousal names should be included in the 'other last name' field. My reasons for that are as follows:
1) From a tech viewpoint, if a person is searching for a woman whose last name they do not know, only the spousal relationship, if the spousal name is not present in that box, they will not find it.
2) I know of one disreputable family member who got referred to as ''la Brunelle'' in records, these were court records of testimonies given by people. This was her spousal name and not her own name.
3) I work with Drouin collection a lot and look at original records. For example, in baptisms, the godmothers are referred to as ''so-and-so, wife of such-and-such.'' This is never done for the men as godfathers, they are not referred to as ''so-and-so, husband of such-and-such''. Ever. They are occasionally referred to as ''so-and-so, son of such-and-so''. Probably due to same names occurring regularly. There are also instances where the woman's actual name is not known, particularly on funeral records, and it is then treated by the officiating priests by calling the woman ''widow such-and-such''.
4) Although women kept their names, their legal position was equivocal at best. I've just been working on a profile where the woman is inheriting from her parents, everything is being done by procuration since she is in New France and her parents were in France. The procuration was first authorized by her husband. I quote ''suffisamment autorisée par son mari par procuration passée devant Martial Piraube, commis au greffe tabellionage de Québec pays de la Nouvelle-France, le 06-09-1641,''
5) It is not true that records after the conquest and to present time only used the spousal name. My own baptism, which dates to well before the law that reinstated women's names staying the same after marriage, names my mother by her maiden name, not her married name. My grandmother's funeral, which I attended, has her maiden name on the documents pertaining to it also. She died in 1975. Tombstones most often bear the maiden name of the wife, whatever the period.
For all these reasons, I feel that spousal names should be included in 'Other last name' field.