It's triple tax advantaged. Also there are age no restrictions or penalties on an HSA when you can use the funds on healthcare

The average retired married couple retiring at 65 spends $315,000 in healthcare costs over the course of their retirement according to Fidelity. Everyone will have healthcare costs as they get older. Healthcare costs are only going to increase as time goes on.

I just turned 31, so I know how you feel. Your young, healthy, and feel invincible. I know it doesn't seem important since you have your entire life ahead of you. But nobody lives forever. Our bodies break down, we get sick, we get diseases, we fall off ladders, we fall down the stairs, we get in car crashes, etc.