Not to worry, my Model 38 from the early '60s is still going strong. It goes to the range on a regular basis & I recently qualified with it for my LEOSA certification.
Greg Bell over at M4Carbine.net has fired over 5,000 rounds through his 642. Many of the 5K rounds fired are +P. Every round fired is documented in the thread. The gun still looks and shoots like new.
Given the advancements in modern ammo, you don't need +P. The Buffalo Bore Standard Pressure Low Flash 38 loads expand down to low velocities and have excellent penetration. Speer and Hornady offer loads in standard pressure 38 that are comparable.