I don't have anything expensive so all our 4 bikes simply hang from hooks in the garage, 30 meters from the house in a shared garage group. Neighbours often leave garage open all day. One even left theirs open for several days the other week when they went away in caravan. I don't know how I'd feel if I ever owned something worth stealing, Whenever I go out and park up any of our bikes I lock up with D-Lock, remove front wheel and include that in the lock, then remove pump, computer, tool pouch, lights and anything that could easily be taken.