I went through a similar situation about 8 years ago.
My advice will be blunt and to the point.
Your parents divorce and their overall situation: Get rid of them. Yes, that is what I said. I haven't spoken to my toxic parents in about 7 years. It has been the most peaceful and happy 7 years of my life.
Life is meaningless: Change your environment. I was in the IT field and it sucked. I was in a dead end hometown and it sucked. I worked really hard for six months and bought a ticket to Asia. That was in 2001. I never went back to Canada.
You don't want to change: You don't have to. Why? All positions decay over time. Your situation won't be any different.
Leaving this life: I think you should consider a one-three month vacation in the Philippines or Thailand, before you do anything drastic. Also, you should read Journey to Ixtlan.
Good Luck, Brother