From years of observation, I wouldnt worry about insurance at all. Like vav said, its all in game currency, and when your insurance lapses, you just wait till you have the money to pay for a new re-up, which should be cheap. In order to get into the position of letting your insurance lapse, the devs say you will have to go out of your way. So yeah insurance is something they came up with in the beginning, but the lengths of the policies are pretty irrelevant considering how they intend insurance to work. Once i starte switching my fleet around, i stopped worrying about lti. Most my ships have several years of insurance but not LTI. And this is on things like a hull E, C, 890, A2, etc... So big expensive ships. Not worried one bit.