Is DAI a good buy?

Could you please provide some insights on whether DAI is a worthwhile investment? I've been hearing a lot about it recently and am considering adding it to my portfolio. However, I'm also aware of the volatile nature of the cryptocurrency market. Would you recommend DAI as a good buy at this point in time? What are the potential risks and rewards associated with investing in DAI? Additionally, could you elaborate on its stability mechanism and how it differs from other cryptocurrencies? Your expert opinion would be greatly appreciated.