My family doesn’t know this, but I have a solid retirement plan. It’s not really a retirement plan in the traditional sense, because I won’t be able to retire from the workforce and enjoy the spoils no matter how hard I try. However, when I’m no longer able to work for money, I’ll pull out my gun and put a bullet in my head. I’m at peace with the idea because it leaves me free to raise my child in the best way possible. What happens to me after is unimportant.
My wife has a friend whose husband ended his own life that way. The family members who found him not only lost a loved one, but they also have the horrific images of his self-mutilation seered into their memory. I’d really urge you to think about that aspect...
Yes, that does sound horrible, but I’m not what one would call a suicidal person acting out of desperation. I’m also not an idiot. When the time comes, no one will be subjected to horrific images.
I get that you're trying to do an unselfish thing here, but I worry that it's going to harm your family more than you expect. Once your kids are 'raised' they're still going to want you to be around as a solid support, even in your 'unproductive' years. I'm 35 right now, and if my parents (~65) ever did this to me 'for my benefit' I'd be so mad at them.
Everyone has the right to end his life when he sees fit. Sharing knowledge of how to do so safely is the opposite of disgusting. To encounter someone who intends to end his life in a risky manner that could lead to lifelong disability and extraneous trauma for his loved ones and not share knowledge of a safer and more certain method is what would be disgusting.