This is why FOMO strikes, this is why so many leave disappointed when the bubble pops, that's why some end up hating Bitcoin forever: because all get lured by the mirage of a new and higher bubble.
What if no bubble will happen? What if Bitcoin will simply stay around the "Mean" area for the next years? Or what if, even worse, the ones that bought at 3000-4000$ will take advantage of the growth and will sell, triggering a new episode of crypto winter?
I don't say bad things will happen, but please, don't be always over-optimistic. Hope for the best, but always prepare for the worse.