I think it should be unobservable for bitcoiners what the price might be in any given year.
All our focus should be on investment only. But there are many of us investors who are only interested in hitting $100k. They plan to sell as soon as they hit $100k. Bitcoin does not run at the behest of anyone. Bitcoin is independent. We can only hope. Bitcoin will not let us down in the future.
Everyone has a specific plan before investing even before they invest they set a specific time frame of how high they will sell the bitcoin price. After the investment, if their Bitcoin investment increases and reaches the expected value, they may then sell their investment to make a profit. So maybe those who are thinking of selling Bitcoin after it hits $100k may have thought of selling after profiting from their investment.
Yes everyone has their own decision in investment it's true and don't mix other investments in bitcoin because bitcoin can help you to be like a huge horizon.
Where you can start depositing bitcoins and that deposit is from your discretionary money, you shouldn't just lock yourself into the $100k price trend. When you deposit bitcoin regularly with DCA strategy without considering the market price situation you should not decide to withdraw as you mentioned you should take long term saving strategy like multiple cycles or more cycles as age or health condition.
If you have a guaranteed income alternative then you should stick with depositing Bitcoins in the DCA method as your health or age is going to be active and Bitcoin holdings are going to be much more positive for the future.