Historical analysis says that generally speaking, dollar cost averaging is inferior to one-time lump sum investments unless you buy lump-sum at the very top of a bull cycle. Lump-sum investment is usually better in all other cases, you get the benefit of interest as well, which is at least 30% of the total return.

This is even more true in cases of bear markets. Since the market will most likely rise compared to where it is now, going all-in in a severely depressed market is usually advantageous.

Psychologically, of course, it is more difficult to do so as you have to go against "common wisdom".

Don't get me wrong though,dollar-cost averaging is a great strategy if you don't have lump sums laying around.