Most time those that wait instead of accumulating are those that have already gotten their fuck you status or have gotten to their accumulation, but I believe that most of them still purchase some portion of bitcoin but not as aggressive they were back then . And yeah if you can hold bitcoin for long you have already reduced the chances of you selling I loss , asking you keep purchasing, and keep taken the dip to your advantages.
People who are still able to hold the Bitcoin they have bought before and continue to buy at this time even though they are not so aggressive are people who have felt good profits through Bitcoin so that they are still enthusiastic about continuing to buy Bitcoin on any exchange without any hesitation to experience losses. Because people who already like and believe in Bitcoin will continue to do things like that at all times even though the conditions are sometimes different, but they still will not doubt the potential of Bitcoin.
I think being aggressive is base on one choice though , even those that have gone far in their bitcoin accummulation and holding can also choose to be aggressive, is just most folks that haven't gotten to a good point in their accumulation and the once that are usually aggressive just to give their accumulation some boost . The reason why most people choose to be aggressive is because it will help time to fasting up things for them in their accumulation, but one thing is for sure don't over do it .
For instance a guy might earning $100 weekly, so he started his bitcoin accumulation with $25 weekly from his weekly earning which is around 25% . Then he decided that he want to fasten things up , so that he can increase the chances of getting himself some nice bitcoin stashes fast then he decided to use %50 percentage of his weekly earning instead, which is $50. At that moment that folks as become more aggressive in his bitcoin stashes than he used to .