Neither, really. I don't have many photos from my high weight (not because I wasn't in photos, but because I'm bad at keeping track of ANY photos). I have one. I kept it on purpose after I found it.
I don't hate how I looked then. I'm not ashamed of it. However, I do recall how trapped I felt under all that weight. My body was no longer comfortable to live in, and I was desperate to get out of there at my high weight. THAT I hated. That is what I want to remember; it was my initial driving force. I work now to not only not go back there (I just can't do that to myself), but also to get to where I DO feel very comfortable in my body.
Also, it helps you to see changes later if you have photos from before. That's a big help when you're pretty sure you haven't lost weight despite the big difference on the scale.