It's mentally and financially attractive to engage in DCA rather than lump sum (including practicalities of the real world rather than fantasies about having funds available that are not available), and DCA practices also may well end up allowing someone to be more aggressive in their BTC accumulation as compared with lump summing it, which is more than just mentally comfortable but ends up resulting in the concrete and material buying of more cornz that ends up paying off, if the BTC price ends up going up.
You're correct. It's easy to look into the past and come up with schemes that would have made you a lot of money, the question is whether they will continue to make you money going forward. Even PlanB poses the proposition as a question. As well with what you say, DCA may not be optimal but that doesn't mean it isn't the best, depending on what criteria you judge it on. Not that I'm saying it is the best (a hybrid approach is probably preferable for most people), just people should be wary about 'make money fast' schemes. They often contain elements that will leave you without a shirt if things go wrong.
I am surely not opposed to more of a hybrid approach, but a newbie might not really be in much of a position to figure out when the dip might come during the month, so such newbie may well be better off to buy his/her $100 worth of BTC every week rather trying to figure out when during the month to buy $400, if she/he were going to try to time the buy for a dip during the month.
And sure another thing might be trying to have enough time and/or to watch the BTC price at various times during the month... It is probably not a big deal either way, but it might even become more psychologically draining if there might be thoughts that the budget is around $2,600 for 6 months (which is $100 per week), and then trying to figure out the various points during those 6 months in which it might be a good idea to try to deploy the buys...
...and we could come up with quite a few scenarios to show that maybe a person might not have a lump sum available right from the start, but if s/he waits for 6 months s/he could be buying BTC every week, but s/he might be able to hold back on the quantity of some of those BTC buys and to figure out various strategic places in which price dips had taken place... and so if the buying had been held back for 6 months, then maybe a lump sum would be available, and might it have had not been better just to buy as the money is coming in rather than holding back some of it, and the answer might well be difficult to figure out where BTC is at in its cycle or whether it might be in a corrective phase or in a going up phase.
Somebody flashed the Buddy signal I guess, cuz he's back in full force.
How ironic that Buddy and Richy_T seem to show up right around the same time.
Have you ever seen them in a room together, though?