There is nothing wrong with 50% humidity in a grow. 60% is good, unless you're having rot issues or something. I like to put a humidifier and a dehumidifier in the same room and let them fight it out. Your plants are looking great. Nice little forest.

Try not to stress man, it's not worth it. I know how you feel. In time this too shall pass. It's summer and sunny, and we have food and drink, a roof over our head and a nice comfortable bed. If you can get your hands on a Norco or Vicidone, pop it.