While most folks won't go to this extent in the floors of their patios, porches, gardens, and courtyards, it's still worth pointing out that even the floors are a decorative element that can be used to create atmosphere and design style.
In most garden plans that include floor areas, the flooring is often considered as a base hardscape with little purpose other than a place to stand or walk. Beyond color and material choice, it is an area where cost determines the extent of design. And while it is a good area to consider for cutting cost, keep in mind that there are many decorative options that look a lot better than just plain concrete. Along with tile, there is also decorative concrete. And for even basic pavers there are a lot of paver patterns that will add interest to your garden as well as staying within your budget