I agree with the old adage that "fences make good neighbors". I have NO regrets putting up the fence even though our neighbors did and it was the bases for our falling out. No loss there!
The other day was VERY windy with gusts up to 40+ miles per hour. The winds were blowing so hard that it stripped most of the leave off our ornamental pear trees. The winds were blowing towards the south east and as a result and bonus dumped most of the leaves onto the neighbors lawn on the other side of the fence!
See fences DO make good neighbors!