Engine Swap?
 

So I have a 2.7L
It has a little over 113k miles on it and is starting to feel revitalized after a major maintanance weekend. And while I had the engine torn Down I did compression tests and all. And for a 110+k miles this engine is prestine. But I realized in the late future It will degrade as all engines do. So I am asking. Is it worth it to replace the motor and trans Down The road or should I just get a newer model. I just want to know what others have done. Seeing as how the all around condition of the car will impact this decision when the time comes.