Shooting in general is very relaxing for me. It started back when I got into archery as a kid (pre-teens) and ended up being an instructor up till I turned 19 or so. It's not about "I'm gonna work out my anger" and "his/her face is on that target" kinda crap; it's about focus. Extremely Zen for me - there's me, there's the weapon (extension of me), there's the projectile, there's the target. That's ALL. Obviously there's perimeter-sensory awareness of "don't shoot out of the lane", "don't point it there", and "what's that guy doing?", but everything else - crappy day, crappy traffic, big bills in the budget, whatever - gets relegated to the "storage" part of the brain for a while and the entire universe becomes me, the projectile, and the target.
OK.
Sometimes, it IS nice to simply run a mag or two as fast as possible, just because.
And I do love the smell of gunpowder. And Hoppe's.
It's very similar to when I'm on my motorcycle - I ride sportbikes, and when I put on my full-face helmet it's me and my machine...and the rest of the world is "out there" outside the helmet, and I can focus on my line, my apex, my brake points, my traction levels, throttle inputs, the various g-forces, and vehicle balance. I also turn the outside world into a panoramic painting that I can enjoy being this close to - I can smell the leaves, feel the temperature drop when I cross a stream, even as separated as my mind is from everything "else", my body is fully immersed in my surroundings instead of simply passing through it.
So yes, range time is VERY therapeutic - but not in the "work out aggression" sense, just in the "gain composure, regain focus, and hone skills" sense. And those skills make it easier to shut out all the day to day crap, too.