How long does DAI last?

I'm curious, how long does DAI last? Is it a stablecoin that can be relied upon for long-term storage, or does it have an expiration date like some other digital assets? I'm considering investing in it but want to make sure it's a viable option for my financial portfolio. Could you please clarify its duration and sustainability for me? Understanding its lifespan would greatly assist me in making a well-informed decision.