I leave mine unlocked because the total value of the contents is worth less than the cost of replacing a broken window or damaged lock. All they'd get right now is my emergency $5 bill, a purse-size hairbrush, an almost-empty chapstick, a freebie bank pen, and some extra fast food napkins. If they hit the under floor storage in the back, they'd also get my $10 travel first aid kit, a beat up old beach towel, and one can each of sunscreen and bug spray. Some nights, especially this time of year, they might even get lucky and nab a hoodie.