I prefer dynamic whenever possible. But the calculations can be slow.

If I try to remember what it was like as a newbie, I'd guess that

1. once you have made it through the trial of trying to figure out which 3d content actually works in Poser and got some stuff properly installed,

2. then learned enough to realize the steps you have to take to make your typical clothing item fit a figure it wasn't designed for,

3. and finally understood that even if you have an item of clothing made specifically for the figure you want to render, it may still not include your favorite morphs...

You're too tired and frustrated to bother learning yet another seemingly complicated thing -- even though it eliminates many of the other issues you struggled with.

And then once you're on the conforming clothing track, you get caught up in it.

It seems that it's almost always people who have been using Poser for a while who "discover" dynamic clothing.

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.