Look, it is the most groovy sing alone song in the whole movie. So I guess what you can put it as is it's when Simba is at his happiest. Sure Circle Of Life and Can You Feel The Love Tonight have deeper meanings but they're nothing compared to the euphoria of Hakuna Matata. Simbas voice (Joseph Williams) is amazing at the end and it just hypes me up every time I listen to it. It's also the point in time where we see Simba change the most and you can't help but feel happy for him. I would love to hear what you guys have to say however, and if you would like to ask me some questions (around this general topic) I would love it. I feel as if all my posts go to waste. I guess you could post other opinions here but I would rather an agreeing insight on why you like ("Not like, LOVE" see what I did there?) Hakuna Matata and what you think it means/why you like it.
Just on a side note this may seem really weird but sometimes when I am listening to the songs I always imagine us TLK fans just sitting together singing along with each other however you may sound. Not that I know what you look like but it always makes me happy to have thought like that knowing that it is not just me.