It's NOT called greed.  It is called accumulation with expectations that the price would go higher... however, if the price keeps going lower, then at some point, BTC investors (bull investors) will run out of money because they continue to believe that BTC prices will be going up. 

I can relate because I have the same issue.. and there is a matter of timing purchases.  I have about an additional $8k that I want to put in within the next month; however, I have already bought quite a bit at this price, and I would like to buy lower or more at this price, yet on the other hand, I cannot really tell if the prices are going to continue to go down or if we are at the bottom or near the bottom.  I don't care that much if I buy at $300 or $350 - even though, if I have a lot of confidence that the price is going to $300, then I would prefer to buy at or around that price rather than at $350....

Anyhow, the point is that the longer the prices are down, the more BTC that us BTC bulls can accumulate - and I have way more BTC than I had expected to have, based on the downtrend in prices over the past year.

in other words, BUY, BUY, BUY  and/or HODL, HODL, HODL.

hahahahahahaha