rainy days
short term
long term
compound interest
retiring does not end the investing

For most people the longest imaginable time horizon ends abruptly at 65 or there about, when they go into retirement.

But the average Swiss retiree can expect to live another 15 or 20 years.

So if you have started saving for your retirement with a youthful 30 years some of the money invested will stay invested 40 or even 50 years until you need it...that's what we call long term investing!