We bought the jars when our house was on the market and I wanted to inject a bit of "lifestyle" into the kitchen. Since then they've been in and out of fashion at the minute they're in, it stops me knocking packets of food off the shelves in the pantry when I'm standing in there snacking on something.
We use them for cereal too, it helps with portion control, we tend to use the measuring device rather than doing a lovely long pour!
There are no jars on the worktop, there's no room, and it would not be sensible for me to leave food on view, way too tempting. Speaking of which, I've not had any milk since I mentioned I wasn't having milk anymore. I occasionally think about having a cup of tea but my brain is lagging behind in that regard, I'll wait a while. I'm getting used to soya milk in coffee, it doesn't bother me at all, although I have noticed I'm having fewer hot drinks in general. I also bought some mango green tea for times when I want something a bit more refreshing, it's OK, nice in the afternoon when the sun is out.