It can be better than some alternatives. There have been stories about Canadians being asked questions about drug use at the border. Upon admitting to some historic use getting barred for life for entering. Supposedly they could have avoided answering the question by withdrawing their application (according to the lawyer consulted). This is better than getting barred for life or being refused entry and you have time to consider your options. Obviously best not get into this position in the first place but sometimes it's not your choice.