You're putting a lot of unnecessary weight in the bow of an already over-loaded boat. If you have a good anchor you don't need the extra chain to help it hold. In heavy winds the chain will go bar tight, and put a tremendous load on the boat and anchor. The nylon line adds a tremendous amount of stretch in the system, which puts a lot less load on the anchor and the boat. It's quiet because you don't hear the chain dragging all over the bottom.
Line is easier to handle and clean than chain.
It's also a lot easier to replace in those distant cruising grounds. Nylon will chafe, so you'll need to make good chafing gear. I use a rolling hitch to secure the snubbers to the chain or the nylon rode. The snubbers are then secured to two bollards, never through the bow roller. The main rode is sitting loose in the roller so there is no load on it.