I won’t need to save money until later in life
Saving up is all about compound interest. The sooner you start saving the better, even if you can’t put aside any significant sums in your early twenties. Your future self will seriously thank you for the effort. A dollar you save at 20 will most likely be worth four times as much as when you’re in your fifties. That’s twenty years of serious investment you’ll be missing out if you start out too late.