Most people's social lives are entirely virtual these days. The boundaries are getting fuzzier.
Yes, there will always be direct local interests like fire, police, emergency service, sewage, utility, etc districts, but those services all have natural boundaries themselves, and the political boundaries can and often do match there at city/county/township/x-district levels.
But the state and federal levels, at least in the US, seem increasingly divorced from geography (outside of the Cold Civil War between rural and urban economies/beliefs/interests). The weird shapes of current gerrymandered districts is only possible because the geography is so divorced from the governing. If the shape of most US congressional districts was the shape of fire or sewage districts there would be riots in the streets.