Nirvana was ripping apart at the seams during the production of that album. Although I'd have to agree with you that it's an incredible album, "in utero" is more of the destruction of one man recorded sonically for everyone to hear.
There's more than just teen angst there, but it's not the internal band chemistry (or lack thereof) that caused in utero to be great.
Then again that Do Re Mi song off with the lights out is more of what made in utero so damn great, personal destruction.
I'd prefer my rock stars in crippling depression, and i realize that makes me a bad person.