Have you
 

As you have hopefully passed beyond the need to throw obscene amounts of weight around, it's important to realize that not only will you get better results from training by feel, but you will also tend to put less pressure on your joints. Don't get me wrong, it's still crucial to train to failure in the 6-8 rep range using compound lifts. Those types of lifts are important, but they are not the focal point of every routine. Use intensity-building techniques such as rest pauses or dropsets, to recruit more muscle fibers.