I started grinning when I saw my sim wanted to listen to Jazz music.
Not the fact that it was Jazz, but because it was based off one of her likes. This is what I wanted most for Whims (now Wants).
It helps bring out their personalities.
I went through my current household and all their likes were about things related to traits, aspirations, relationships, and likes.
Nothing about Bee Boxes or 1 x 1 pools.
What I don't like is they removed the cancel feature and they expect you to buy a potion to cancel the want.
Talk about short-sighted, so what if you roll another Want that you don't want? Are you going to buy another potion?
No, so it's a feature that few people will actually use, or use very sparingly.
That must be there because the amount of wants are actually limited and it will keep you from seeing how quickly they roll the same wants again.