I had a rack and went back !
Can totally see why people prefer panniers and I could make it work but I like the idea of my stuff staying with me whether I'm on or off the bike. Yes I know that some panniers have shoulder straps and some double as backpacks, but I'd rather not throw a bag that's a slushy mess on my back. Plus I didn't really like the way my bike felt with panniers on. Not so great for bunny hopping and I'm not that good at it as it is.