YIMBY

A few positive externalities from a house in suburbia:

• The neighbor's tree that perfectly blocks harsh evening Sun from my house and backyard
• The inviting aromas from another neighbor's grill
• The sound of kids splashing in a nearby pool
• Moving to the front yard, the mostly well landscaped gardens of the houses up and down the street especially the neighbor's right across the street
• (more to come)

A spur of the moment theory: our marginal choice of where to live (perhaps many other choices as well at the margin) are largely explained by finding circumstances where positive externalities outweigh negative externalities.