LulzyExquisiteStoneIt's always hard to see what someone means by saying "this was his only option" It could mean anything from an affair to suicide, but running away from society is also possible, it's a bit odd he only left a note without any detail on where he went, and that must also be really stressfull..
Try to think if you're dad was really down the last couple of months, or whining about how unfair some things are, or if he was more stressed/happy
It's always a pain to hear these things, not being able to be there for your loved ones is hard, I hope you'll find him!
I keep overhearing my mom on the phone saying stuff like, "He kept saying he felt like he was over his head in work and that nobody was helping him. And we kept worrying about money, but we always worried about it, and it's weird because every so often he would reassure me that we were chipping away at it."
I'm sorry I can't give you guys much else to work with.. I'm just very worried and I can't show it because my brothers will start worrying too. It doesn't help that he's extremely intelligent, so he clearly knew how to avoid being found...
The painkiller thing is weird, because the rest of the story fits better with a runaway