A golden age for Bitcoin definitely hasn't happened yet and isn't happening now, since Bitcoin is at best a minor currency. So, if it ever has a golden age, it would be in the future. When that happens would be some time after the upcoming global depression. If Bitcoin can survive that and manage to achieve mainstream adoption, then a golden age for Bitcoin would begin.
What we can't predict:
  • If Bitcoin will survive the depression (IMO, "survive" means "mining hash rate stays well above the level at which a 51% attack is feasible")
  • How long it would take to go from the beginning of the global depression to mainstream adoption