Why should I buy ATOM?

I've been hearing a lot about ATOM recently, but I'm still not quite sure why I should invest in it. Could you please explain the reasons why someone might consider buying ATOM? I'm particularly interested in its potential for growth and the underlying technology it's based on. Also, how does it compare to other cryptocurrencies in the market? I'd like to get a sense of its unique selling points and why it might be a good addition to my portfolio. Thank you for your insights!