I feel your frustration! I don’t know why they don’t care about the Whims, they actually help to illuminate a Sim’s individual personality when done well.
Some thing I’ve been thinking about is how if they just took the checklists in Aspirations and transformed them into Whims, that would help feel like the Aspirations meant something. In my mind, Aspirations in TS2 and 3 are also just made up of a list of similar type things that are in the TS4 lists, it’s just we don’t actually see the lists in the previous games because they’re behind the scenes tied into the personality mechanic. And then idk maybe they could change the way they present the Aspirations so it didn’t feel like just a list to follow. But, I feel like the template and information they need is literally right there in the UI.
They also need to add something to counteract the Whims like a Fear mechanic so it’s not just a gain/advancement for the Sim but also there is a chance of regression too.
I still keep the Whims on now even though they aren’t updated because I still prefer that to not having some sort of indicator of what my Sim wants in life.
Idk, on one hand I have changed my expectations on The Sims as a robust life sim game so I can still enjoy it, but on the other hand...man, if a more deep/complex life sim game came out, The Sims 4 would move very far down my list of games that I play on the regular.