Nope! its a bit more complex than that. I did a back-of-fag-packet calculation for those caps working at their full rated voltage and if you keep the ambient temp at around 30 degrees (instead of 85) the expected life is over 80 years. Temperature really is the killer of electrolytic capacitors.
Electrolytic caps rely on chemistry to work and the rate of chemical reactions was discovered by Arrhenius. Basically the rate of a chemical reaction doubles for each 10 degree rise in temp so even without doing any more big complicated sums we can determine that if life at 30 degrees is 80 years then at 40 its 40 years at 50 its 20 years at 60 its 10 years - get the picture?
Cheers,
DV
True but it also depends on internal plate size and current and ESR, lots to consider. Lets all recycled paper and make paper cap in air , how big would 0.5Farad be at 50V? Oh I need 4 in each amp.