USD is a global currency that people from all around the world trust it and use it in trading. so as long as the petro-dollar system is still powerful, US dollar will be dominating bitcoin trading
Yeah and I'm looking at it since the petrochemicals industry is still on its halfway thru being totally mind-out. We can see Mega petrochem projects on-going in the middle east and I think some of it will be completed in a year or two while cross country pipe laying are still on-going too. This means the petrochem projects are still in the process of construction.