Is the point of journalling for you to have memories to look back on or to help you process what happened during the day or another reason? (I've never tried it so I'm trying to understand the purpose.)

Probably the biggest purpose for me is to have something to look back on. The last time I consistently journaled before this was during the time when I dated, got engaged to, and married my wife. Granted, that was more than a line journal, but it has been really nice for us to go back and read it together all this time later. With the line journal it is more of a prompt to help me remember that time period than a detailed description. But also I guess there is an autobiographical aspect to it that appeals to me--maybe someday I'll use it to help write an actual autobiography. And if not I also like to think of it as something to leave for my kids or grandkids to read when I'm gone.