That seems like a pretty broad statement, Arico. I have several mature trees on my property, which is large enough to keep them in scale. They provide screening, shade, fruit, fall color, and winter interest. The few that have died over the years I have replaced with better suited cultivars. I do live in a rural area, so am fortunate to have enough space to accommodate large evergreens (cedar, fir, spruce, hemlock) as well as smaller ornamentals (crabapple, dogwood, katsura, golden chain, Japanese maples) and fruit trees (cherry, pear, plum). I like to think they have added value, certainly in my mind if not on paper.