I'm on my third Rebel and can't say enough good things about these cameras. If you read through any of may articles or write-ups you'll see I take a lot of pictures, as in a lot of pictures.
The one thing I like about a full size camera like the Rebel is the ability to get the entire side or profile shot of a car in frame without having to walk 50 feet away from the car, like this...
Kind of a simple benefit to some but when for me, for the amount of pictures I take and the walking time to back away from the car to fit the entire car in-frame, it's worth it.
Plus a lot of other reasons. Like others said though, you need to learn to use the features of the camera to get good shots and that takes reading and practice.
Getting on a ladder and getting shots like these helps with a camera like the Rebel too and I use the box stock lens.

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