Spotipy- Why is there a 50 song limit when getting saved songs?
They don't expect users to be regularly retrieving all of a user's songs, only a portion of them (and potentially by filtered query). In addition, it could be a waste of data if 100 songs are sent, but the user only ends up using one song. 
Fifty is a sensible limit, and there is pagination to allow for accessing more than fifty songs in a series of smaller requests (rather than one large request).
I am using the Python Spotify library Spotipy with a Raspberry Pi, and I am wondering why there is a 50 song limit when trying to see the user's saved songs? I have looked at the documentation, but I am still confused on the reason. If you answer this thank you so much.