Totally this. I get asked by friends if they should buy in (or buy more) and my answer is always "if you can afford to lose it, sure". I feel like people asking if they should buy or not right now will be far too distracted by the volatility to profit. If you're asking this (in the hope of a black and white "yes/no" answer) then you will probably also panic sell if it drops 10%, which would be nothing in the context of this year.

Dollar cost averaging is what I suggest to my friends (and again, only if they are "happy" to potentially lose a percentage of it quickly as much as they gain). Of course, nobody wants to hear that!