$1 tomorrow is worth less than $1 today. $1 today = $1 tomorrow + time value of money. This time value of money is represented by interest in savings account and earnings in investment accounts.
People in general would prefer to consume $1 today than wait till tomorrow. Now, there are two categories of people – those would would postpone their consumption in return of interest/ earnings. And there are those who would prepone their consumption by paying interest.