For one thing, planting a tree offers inexpensive pleasure. Bareroot plants may cost as little as $25, require no fertilizer in the first year, and only need (where I live) a little protection from deer in the form of a tree tube or bit of fencing. Mulch is helpful, but this can often be gotten for free. With no more expense, I buy myself hours of enjoyment, from poring over nursery catalogs (an exercise in unmitigated concupiscence), to the excitement of planting day, to the light and satisfying work of pruning and maintaining a young tree. Even if I never taste a single apple, the process of planting and tending a tree offers me a satisfaction that I find it difficult to deny myself.