forgot the key

Some days ago, forgot the key of my appartment inside when leaving home. Waiting outside, ringing the door bell, the neighbour letting me in through the door downstairs all the way up to where they live. Perhaps I should tape the key somewhere. But the lucky co-insidence; if you don't have a key, someone else has and perhaps, rescue you inside. How nice! How convenient! I just stand there and wait for someone else to do the opening for me...NOT! But occationally, the unexpected openings are gifts.