CTB by volcano reminds me of the ending in "Terminator 2", where T-800 commits suicide by lowering himself into molten steel. (Well, the word "suicide" is debatable, since he wasn't even human, although he took on a father-like mentor role to John Connor.) If it weren't for the physical pain I'd feel until the molten steel reached my head, it's not a bad way to CTB. It happened slowly in the movie, but depending on the viscosity of molten steel in real life, it could be as fast as jumping into a swimming pool. Not to mention, it's a way to honor a movie classic. (Well, "T3" and onwards turned to crap, but the first two were great.) Skynet is also a good parallel for the shitty world we live in.