Lifeline material

[seacap]

Hi all,
I am considering making my lifelines out of 3/8 Dacron. This diameter just fits through the hole on my stanchions. My questions is: What are the advantages of dyneema over dacron?

I am a big fan of dyneema. I have dyneema standing rigging now for 6 years here in the tropics (St thomas).
But wire has always been thin and uncomfortable to fall against, and thin dyneema would be similar. Something like a cheese slicer. To me the 3/8 would be more forgiving of human flesh and be strong enough. Most 3/8 Dacron has a breaking strength of 3000lb and the little bit of stretch it has would dissipate a lot of the load of someone falling against it. Plus it fits a traditional boat much better. Just because I'm a traditional nut doesn't mean I don't want a viable solution.
I know the Pardeys used Dacron. So this is the basis for my question.
Thank you in advance.
Gary