Those "wars" aren't meant to be solutions. They are just a way to embezzle money in a way that is politically acceptable and a way to remove poor and mentally ill people from the public instead of helping them.

War on poverty? Just give them a house and food. War on drugs? Just let a doctor administer a safe dose that doesn't make them high. War on Terrorism? Fund their education system and foster good relationships with those countries instead of bombing them.

There are obvious reasons why those solutions haven't been implemented: the population is happy with the way things are going.