Yeah I'm only pulling your leg mate. I do have an Ancestry account and have traced my relatives back to the 1700s (farmers from Storrington and surrounding areas, in case you're wondering) but haven't felt the need to spit in a jar yet! I find the whole genealogy thing fascinating but...
You seem to be more than a little paranoid. Lots of if's, but's and maybe's there. Do you also wrap tinfoil around your head or sleep in a nuclear shelter?