This is a momentous occasion and reason to celebrate!
I paid off my student loans with a balloon payment today. It was the last loan in my life so far. I don’t have a mortgage (rent the place we live in), the car (our one and only car) is paid off, and the only other thing you could describe as debt is what I run up on the credit card, but I pay that off every month.
It’s a truly liberating day! Now on to FI.