I do. Lifted heavier in my 20s & 30s. My PR days are behind me. Just want to keep hangin 'n bangin for as long as possible while staying injury-free.
Naturally my strength is going down as I age and also include more cardio. I just feel like I'm not training hard unless I take every set to failure with what is heavy weight for me. On the other hand my brain is telling me I'm one rep away for really messing up my body. I've seen many outstanding trainers that use moderate weight for lack of a better term muscular endurance training.
In the running world a 400 meter sprinter certainly trains more intense than a 10K runner but you will never in the history of track hear a 400 meter guy say a 10K runner doesn't train brutally hard. In bodybuilding you hear that all the time. A guy that uses 6 sets to failure a body part will often say the 20 set guy isn't training hard when nothing could be future from the truth.
Maybe I will come to my senses soon and use lighter weight, less rest between sets and let the last set of 4 to 6 sets be the failure set on an exercise.