Chain has some advantages over nylon, but also has some serious disadvantages.
Chafe resistance, catenary curve,
Weight, shock loading of ground tackle, generally requires a windlass,
BTW, the catenary curve provided by chain is negated in high wind conditions, when both chain and nylon rodes are going to be heavily loaded and essentially straightened out.
Depending on your boat, it may make more sense to go with a combination rode, with about 30-60' of chain to give the rode chafe resistance, and then the rest of three-strand nylon, for the shock absorbtion and lower weight.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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Still—DON'T READ THAT POST AGAIN.