I view them as the biggest PONZI scheme(s) in history.
Others swear by them- claim it's the only way to go.
Not for me - worse than a pump-n-dump on the OTC, imo.
Looking seriously at gold coins - maybe in the 1/2 oz. size - buying a few per year, or when can afford it.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...