First of all, in about 1981 (not sure exactly when), gold was, in REAL value (i.e. inflation adjusted), like $2,000 USD. It dropped to like $200 (one-TENTH the original value) a few years later.
Second of all, it's impossible for the price of anything to go up infinitely because eventually, people won't be able to afford to buy it anymore. When too few people wanna buy something, it's price is gonna come down.
This is retarded to even talk about. It's as obvious as 2+2=4. It's annoying as mother(*)(*)(*)(*) that people even debate this (*)(*)(*)(*).