The American consumer has been conned into believing that those flawless uniform red things they buy from the feuding farming industries in Mexico and Florida are tomatoes. They may look like one, but they taste like, well, nothing.
Occasionally I buy one hoping this time might be different. Nope; they're the same things that have been sold for decades. No matter the price, they don't taste the way a tomato should.
So I grow my own, and the difference is stark. My home-grown tomatoes are sweet and have so much flavor that there is no need to use dressing.