My main family is a Vampire with an Alien wife, so I'm not part of the anti-supernatural crowd. I considered just letting the alien die, and bringing the ghost back instead of perpetually postponing birthdays, but from what I remember, playable ghost were just way too clunky to work with regularly.
If the implementation was better, it would be different, but they're just an annoyance for me. Same with plantsims this time around, yeah remember them? They're solid, professional, competent work for original content; it's not as if this is the third time we've seen these things or anything.
Taking my alien to the jungle, getting skeletonized from a chest, and having absolutely nothing happen is the entire TS4 experience distilled.