This will always be the case, remember those irrational buyers in 2017? What do you think happened to them? I'm sure majority of them opted to get out and suffer a lost. However, they've learn a valuable lessons and a very expensive one. So come 2019-2020, they become smarter.

Now, a new set of investors are going on that same experience, didn't want to miss out, FOMO and then later suffer a loss. So it's cyclical and how much as we wanted to stop this, it won't as there are going to be newbies entering the market every year or every bull run.