Trees come with a whole bunch of other issues. I have something like 40 trees ranging up to 20m tall. Cleaning up the leaves and branches is a year-round job. Collecting and removing the waste involves time, money and CO2 producing trucks. If not removed promptly, waste left up on my flat roof causes water damage after rains. Heavy storms make me nervous because I've once seen a set of healthy branches large enough to kill me snap right off (this was some time after the storm).

Some of the trees also attract rats, which drives my dogs nuts at night and is then a source of anxiety given the high crime rate in our country. Trees along the perimeter of the property have damaged the boundary walls, and other trees have ruined sewerage lines. If you want to plant trees, make sure you understand the potential future costs associated with them.