Bitcoins overtaking on the golds price is just one step for bitcoin
It has no real value other than for statistical purposes.
and it is believed that soon paypal and western union will be out of business due to bitcoin usage.
You just like to spew around with unfunded arguments, do you... PayPal is a growing business with more than 200 million active users, and that number is constantly growing. PayPal offers people exactly what they want, and that's not something that can be said about Bitcoin regarding the currency aspect. WU can be overtaken in the way that Bitcoin produces more transaction volumes valued in USD, but that's about it. It won't impact their core business in any way.
I am not against paypal and Western Union but the possibility is high that bitcoins features will deem the services of paypal and western union less convenient and useful.
Both PayPal and WU score a better level of usability and convenience than Bitcoin. You must not forget what makes PayPal and WU so interesting for users. Both are different platforms with features that Bitcoin simply can't offer.