One thing I have personally discovered, is that some gear can help with medical issues. For example, I have minor scoliosis, and have found that strapping my plate carrier as tightly as possible works as a brace, and -really- reduces the pain/stress in my back from all the bending and moving. Web gear and tac vests however, make it worse. It is all preference for what works for you, and lets you have the best experience possible.
Peace through superior firepower.