I personally think the idea to literally take profit -- like @OP wrote, selling only BTC for the value you "won" in this bull market -- is quite good if you're not willing to commit for the long run.
I think also most investors that are taking profit in the current area at $115-120k probably have invested at much less than $100k so their ROI may be quite high already now. Some will have set an explicit goal of e.g. 50% or 100% profit and that should have been easy to achieve in the last 2-3 years.
Of course, most of us think that Bitcoin can fly much higher still. But at least when it comes to what could happen in 2025, it is not that unreasonable to be a bit more cautious as we're already almost 3 years in a bull market (since late 2022's $15k lows, technically). My personal guess is that at least 150k are possible, but it's not guaranteed at all. And thus, if you're more of the cautious type, it's reasonable to sell a little bit lower.
An alternative idea to taking profit I will always be advocating for: spend some bitcoins directly instead of selling them for fiat. For example
travelling 
"Store of Value" is totally okay but Bitcoin would be even stronger and more resilient if it was used more for real payments (not for every coffee, mind you ...).