Please explain to me.

[king1]

I have been losing money hand over fist, not because of the high price of petrol but have lost thousands with kiwisaver so took the plunge and have arranged to close my account, bloody cheeky bank said its a long term thing you should leave it in, my answer was ... lady Im 71 with a heart condition and I might not have long term , and with that she handed me the forms to fill in. 

They are absolutely right though.  Markets will always recover eventually, this is just market jitters from uncertainty.  But once you take the money out or change plans you lock in the loss permanently and can never recover it...