gold is worse since you have to kept them safe, everyone can robb you the gold.
And bitcoin can't be stolen, right?
Sorry, but I think a lot of the gold bashing in this thread is plain stupid. In reality bitcoin was modeled after gold (and other precious metals), that's why the generation process of bitcoins is called "mining".
Gold is physical, bitcoin is not. There are advantages and disadvantages for both cases.
The purchasing power of gold pretty much stays the same longterm. If gold value is expressed in fiat, it is mostly an indicator of fiat inflation. I predict that bitcoin will share the same properties once it has reached the saturation point of adoption (until then it will rise in value substantially).