Some like the monitored approach idea and some don't. I personally do not, but thats just my preference.
However, should a Captain retire after having used monitored approaches for a long time and then go to a company which does NOT use them, the line training can extend for a very long time. In one company I worked for, about 60% of these guys did not complete line training and were asked to leave. As I was involved with line training at this company, it was not a pretty picture.
However, if monitored approaches are the norm in a company then..... "if it ain't broke, don't fix it".