I do the DL to develop (or at this point maintain) posterior chain strength, in particular the erctor spinae. I do not lift really heavy.I enjoyed deadlifts forever. Using the hex bar to do them was awesome. Notice the past tense. The question I was asked by some lifters and PT people and my massage guy was why do you do them? While it is a functional exercise, how often do you need to lift two, three, four hundred pounds off the floor. Furthermore, as someone getting older, what is the risk to benefit ratio and how does it improve what you want to do - which i my case is basically surfing. For me, I've been able to find other exercises that work my hip hinge and legs/back while also being more geared to surfing. Just a suggestion, that's all. Think about why we do certain lifts and does it help to improve the activities you want to do. Aloha!
Care to share the other exercises you do? I also do bridges, bent over rows, and use an ab roller. I should start doing mountain climbers again. I started doing pop ups recently and the (mildly) trigger my back.
I came across the "horse stance" the other day. I think that might be good. I was feeling my back the other day as I went from paddling to sitting on your board, a motion you do over and over again while surfing.