I hope my now 8 year old son or 1.5 year old daughter would take it over but it all depends. If they are still going through college and what not then honestly there are far more important things. I guess as time goes on I will think about this more. I'm only a little over 2 months in, so at this point I'm more likely to cause a crash than my death. Not that I would want this, just trying to be open minded. My immediate concerns are battery backup/backup generator, chiller, etc.
Sorry I think this post helped me more than it answered any of your questions. I'll start to bring up the topic with my fiancee. She doesn't care for the the tank. I'll probably just tell her to sell everything.