Oh, yes, I understand now. The original post was talking about changing surnames in general so I thought that it was criticising the norm, and my reply was in

Oh, yes, I understand now. The original post was talking about changing surnames in general so I thought that it was criticising the norm, and my reply was in similar fashion - "why does the norm exist?" Should have clarified, sorry. It [not changing names] really wouldn't work out well if it wasn't the norm in place as you say, there are plenty of issues that could happen.