I doubt that being in bitcoin for 4-5 years or more helps you to know better when the BTC price will move, but it helps you to figure out at what prices that you might buy, if you had started to slow down in your BTC accumulation, then you may stop DCA and ONLY accumulate on dips or during BIG dips.. but you are likely mostly informed by a sense of already having more BTC.. and perhaps even getting to a point in which you feel that you have enough BTC relative to other assets that you also have.    Your choices are likely not even going to end up being correct, but you are in a better position to have more options after you spent some time accumulating bitcoin (and also more likely to have your currently held BTC in profits) versus the person who might be in his first year or two of BTC accumulation, but some people still might not end up doing the right thing because they might be trying to keep their average cost per BTC down, and then they end up being too whimpy in their BTC accumulation, merely resting on their having had accumulated BTC at lower prices and at earlier times.  There sometimes can develop feeling of futility if you accumulated 4-5 BTC over the past 4-5 years, but at that same accumulation rate, you may well ONLY be able to accumulate 0.5 to 1 BTC over the next 10 years, so there could be some questions regarding if it is a good idea to continue to accumulate BTC, and no one can really decide for that person who is weighing his own particulars in order to figure out whether 4-5 BTC is enough and how much better would it be to have 5-6 BTC, even if it could take another 5-10 years to accomplish such additional BTC accumulation.