Obviously, I don't know you and might be completely wrong about this ... so take it with a grain of salt.
You sound like you are simply not a "baby person." Some of us love NICU not because of the acuity and intensity, but because we like babies. It sounds like you are not really into babies -- and perhaps found level IV NICU attractive because of the intensity/acuity. You would be just as happy in an adult ICU or ED. Me? I would be miserable in adult or ICU, but my NICU interest was based on an attraction to neonates. I liked the intensity, but also loved the cute little faces ... and toes ... fingers, the smooth skin, little tiny baby butts, etc. I can go on and on about all the things I love about newborns, especially preemies. And I am an old, jaded nurse in my 60's, not some newbie. Now that my career has taken me out of the NICU, I miss the babies and still "ooooo" and "ahhhh" sometimes when I see a cute one.
If that is the case, then you might be happier in an environment such as a level 1 trauma setting ... or adult ICU ... some place where it is intense and high drama all the time. Most NICU's (even level IV's) have periods of calm and stable patients interspersed in the midst of some high intensity and drama. In fact, the blend of the two is considered emotionally more health for the staff -- to have periods of "rest" mixed in with periods of high stress. That mixture and balance helps us to stay in the NICU for a long period of time and not get burned out. Units that are high intensity for every shift tend to me more like battle zones -- and often experience staffing problems, interpersonal conflicts, etc. because of the constant stress that the staff is experiencing.