Until we start to see the money printers within the biggest economies turned off (or tapered down substantially) then cheap cash is going to keep flowing into any sort of asset available. However history is full of boom and bust - what's weird is we have supposedly recovered from the worst pandemic in about a century and yet the economy in many places is soaring to record highs. That is a very strange place to be from a logical point of view. It would appear that we are still within the "fire fighting" stage of the virus, which may take another year to play out with hopefully no new dangerous variants. It'll only be after things have started to calm down that the shockwaves of huge amounts of borrowing might start to ripple and give us the "bust" part of the economic cycle that Covid managed to almost skip over.