Adding basil to salads is the least weird thing I ever heard! It's customary in Italian and Greek cuisine. It goes everywhere, really. I add it to soups, pasta obviously, you can add it to a jug of water and let it sit a bit and then drink the water like you would regular water, only now it'll be tasty! It's a good thing for people who just don't like drinking plain water (yes, they do exist!) and are maybe a bit dehydrated because of that.