There's a lot of "your mileage will vary" involved in this one (stable job? emergency funds? etc), but one thing to consider is the cost of financing for your student loans vs the rate of return you expect to earn or save. As an illustration, let's pretend we live in a simplified, unrealistic world. You have $100k in your pocket (lucky you!) and two choices:
A) Pay off your $100k in student loan debt, relieving you of that burden and saving the 5% interest you were being charged there, or
B) Buy a rental property for $100k, which generates $10k/year in income after all expenses are paid.
In this grossly simplified example, the rental property is the better choice. Paying off debt that has an interest rate of x% is the same as earning x% on your money, in which case I'd much rather knock down the debt. But if you find that a different choice makes or saves you 1.5x% compared to your debt, you may want to continue holding your debt and make that alternative choice.