Despite being an expat (having a long-term permanent residence in a another country and not paying any taxes or similar obligations back in my country of citizenship), I still have the right to vote in national assembly and presidental elections. The government goes to great length to enable that - establishing a process for remote elections, sending out ballots ahead of time, delaying result counts until all ballots arrive and opening voting spaces in consulates and embassies around the world.
According to Wikipedia, 93 of world countries allow their expats to vote (https://en.wikipedia.org/wiki/Right_of_expatriates_to_vote_in_their_country_of_origin).
My question here is: why? What is the legal or moral rationale for governments and countries to go out of their way to enable the voting right of the people which are not connected to the life in the country on day-to-day basis and don't have a big stake in outcome in any case? One could argue, that expats are significantly more interested in governmental elections in their new country of residence.