Mine is Losing. Death maybe scary but for human the real fear is Losing. Losing the people we love, love all the money we have, losing the will of living, etc. Death mean nothing when you have nothing to lose anymore.
I used to say the same thing then I realized that if you fear nothing then you love nothing. Because say you love a certain person, wouldn't you be afraid to loose them?
I guess my biggest fear would be, Change. When I was younger we moved ALOT so now we are finally stable and I don't want things to change because change means something new but newer doesn't always mean better