It is slowly becoming unsafe, and fixing it in orbit is likely too expensive. Space is a very punishing environment - enormous differences in temperature, vacuu

It is slowly becoming unsafe, and fixing it in orbit is likely too expensive. Space is a very punishing environment - enormous differences in temperature, vacuum, aggressive radiation. 25 years of such conditions will have consequences. It could probably be dragged onto a higher orbit as a museum in situ, but keeping actual living people in there is going to become too risky soon.