I have had horses outside my door for over 30 years. There are currently 7 on my farm. I find them extremely therapeutic....like someone mentioned here, just getting outside and DOING something helps. I find just watching my chickens equally therapeutic. But I don't think it's a replacement for traditional therapy. I've heard it IS expensive, so I think if it were me, I'd probably just take some riding lessons somewhere (cheaper, and still the benefit of being around horses) and see how that makes you feel. If you find your spirits rising from that, you can just continue doing that, or then determine that equine therapy might be right for you. I think it can be helpful for anyone. I have a miniature horse I take to our local nursing home pretty much every summer, and it's amazing to see the difference a visit from an animal makes.