Recently I feel people's lives are filled with math.
To be specific, almost every thing is related to math.
Choose a job with higher salary, choose an insurance with higher return,
choose a wife ( or husband) who doesn't fu*k up your money,
choose a house with lower down payment,
choose a loan with lower and fixed interest rate,
choose a hobby that doesn't cost you a lot,
choose a school that provides you and your children a better chance
to get a so callled "good job", choose a nice day to die in several
decades when you withdraw all your saving in banks,
choose healthy meals to control the index of your cholesterin etc.
Whatever is more benefitial, you choose; this is reasonable.
However, you have to evaluate them correctly, and that is math.
Conclusion: Math matters, and life sucks.