I have several years experience in LTAC ICU. Granted it is a LITTLE bit different than a regular hospital, it is still acute care, and it is still a hospital. Insurance companies would rather have their patients transferred to an LTAC than leaving them in the regular acute care hospital because of a few factors, mainly..
Then there is the rehabilitation factor. An LTAC is more equipped with atleast starting the rehab process. A regular hospital does not go into rehab. You are discharged as soon as possible, and if you need more care, more IV antibiotic therapy for whatever reason, ie pneumonia, UTI,, etc... then you get transferred to an LTAC where you can get your acute treatment while getting rehab, PT and OT, wound care, and swallow eval's... nutritional consults etc....
Even critical care patients are transferred to LTAC's. Short term and long term ventilator patients,, septic patients... A large percentage of the patients are going to be sick for a long long time, but they're not ready to give up. In the ICU we see a lot, and I mean A LOT of old people that have been in the nursing home for years,,, all four extremeties contracted,,, peg tube, RAGING stage four sacral wounds,, on ventilators and the family is not ready to give up. They are full codes. So, we run the full load of tests and give whatever vasopressin or critical care treatment that is indicated.
The end result is,, you will get acute care experience, and if you are not fullfilled at your current job,, you may end up being miserable! Just do what you think is right... You may find your niche in LTAC.