For me, the beautiful thing is finding the games that stick with you even though they're jam games, buggy or incomplete.
It could be the way those games make you feel, the ideas expressed in the games, or that 1 thing you think is new, different or makes it stand out to you.
Jam games rarely go big or get seen outside the jams, so every game you play in the jams is only ever going to get played by a small number of people, to the point where it almost feels like an exclusive club, or an exlusive game made just for you to play. Not to your own plans or ideas, just a completely new and unexpected experience that you have no control over other than clicking "load game".