In that case you could install a birdfeeder or grow plants that attract wild birds and squirrels. You should also consider views and what your backyard has available for entertainment. Anything is worth watching as long as it is not stagnant. Finally, safety-proof your back yard. Here are a few dangers that sometimes lurk in our back yards.
Tree roots growing under and lifting sidewalks make walkways uneven and dangerous.
Fruit and nut trees also create problems when their bounties fall on the paths and make them slippery. Paths should be constructed of solid, firm materials that do not move or create obstacles. Paths with stepping stones, gravel or mulch are difficult to maneuver. This is especially true if a cane, walker, or wheelchair is being used. Take a close look at the plants in your back yard, particularly those lining the pathways.