How to choose between saving and investing your money

Does it make sense to compare long term averages of investments with the peak of savings rates?

MSCI IT IMI/INSURANCE STRD EUR (^666081-EUR-STRD)

MSCI - MSCI Real-time price. Currency in USD

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741.01

+5.86

(+0.80%)

As of 11:00AM EDT. Market open.