You know, I had the exact same reaction to my daypack when I opened it. It was my first vintage
coach purchase so I was looking VERY forward to ripping that box open. I had looked over the listing measurements many times so I knew it was only going to be 9x7 or around there, whatever the exact measurements are. But it was like my eyes were still shocked when I saw how small it was. It took me a few minutes of staring at it and handling it before I adjusted to it. My husband still looks at it like one of those teenager micro backpacks and actually said "please don't wear that anywhere." But honestly I loved the look of it no matter how small, and I do intend to use it one of these days on a weekend trip or somewhere like that versus carrying around a heavy purse over my arm. I just think it is shocking at first that it is not the size of a full size backpack that we are so used to. Would I want the full size version instead? All leather and probably heavy...probably not. I don't think I could keep it blemish free in the way I could the smaller one.
ETA I am sorry to hear about your day at work yesterday. I am glad that day is over and today you can start fresh today. Everything is so crazy right now but it will get better. Take joy in the things that give you joy and don't worry about 40+ or red or micro. I think those of us in this age range suffer from fashion rules that were ingrained into us in the late 80s and 90s by parents who dressed us as children with their fashion rules from the 60s that have been thrown smooth out the window. I feel like we are like awkward teens again stuck inbetween age-styles in clothes and accessories.