This psychology seems to come into play when you raise the bed. You become more meticulous when caring for the garden. In fact, you'll pounce on invading pests as soon as they arrive. I guess it is because you are physically closer to the plants and see problems before they become major ones. Small hand tools will more than do the job as you'll do most of the work sitting on the edge of the bed.
Yields are significantly higher in raised beds since wasted space is nil.
You'll make every square inch count. And harvesting becomes a pleasant task, as you'll be sitting on the edge of the bed when picking. When building the raised beds, select a sunny location near the house with at least six hours of sunlight. The closer to the house the better to keep your eyes on things. Don't overlook the patio or driveway as a place to build.