Hey RoulisHollandais, you've been doing too many Dutch rolls!
There's been lots of research that's pretty well proved that Constant Angle/Constant Descent Final Approaches (NPAs) are far safer than Dive & Drive for a whole bunch of reasons. In addition to the performance issues raised previously by others, note that following Distance/Altitude guidance checklists on charts - whether flying AP+(advisory)VNAV or especially if flying manually (with or without FD) - helps assure situational awareness - particularly for GPS procedures.
For those who don't have access to the FSF ALAR toolkits, check out the same material for free on
SKYbrary - Flight Safety Foundation ALAR Toolkit, and ref ALAR Briefing Note 7.2 CANPA (
http://www.skybrary.aero/bookshelf/books/811.pdf)