Chapter 76 - I really don't understand why they use curse energy in that way

For anyone who don't know what I'm talking about I'm talking about jujutsu kalsen in more specifically I'm talking about how they use the curse energy you see what they use generally it's either a power up or use them in their skills like domain expansion for example the thing I don't understand is why they don't make curses out of them like the little name is called cursed energy the little name had the word curse in it my first thought when I hear something like that is oh maybe I should make a curse using this energy you know simple brain logic there but no they're never really use it in that way is always confuse me and I never understand why is that heck the reason why they even call it curse energy because they come from the negative energy of people so once again why are there not making curses I can picture so many uses from that for example you could have dormant courses place it inside your body or on your skin and transfer it to whoever touches you and activates it that's not alone can be pretty interesting especially how would they make the curses how the curse will work or what is the end result it always confuse me and I never really understand why no one makes something like it or at least in the show