Your own Mortality - Does it worry you sometimes?

[RainbowBrite]

It is something that I occasionally used to think about but it was not until after my XDH died it hit me that I am the only parent my 4 older kids have, if something happened to me they are orphans...that was pretty profound and scared me a bit.
It frightens me to think any of my kids might be brought up without a mother, but I know my 3 younger kids will have there dad.