Why do voters elect governments with only short-term interests in mind?

Because we built a system where only 34 people in the entire nation get paid too look as far as six years into the the future. The president, and 1/3 of the Senate cap out at 4 years. The House of Representatives and 1/3 of the Senate can see 2 years ahead. Most CEOs and industry leaders are limited to 3 months.