I've got a secure area for my bikes. Essentially a closet. My good bikes go in there.
My junker leans against a tree out front at night with only a rear wheel lock which I sometimes neglect to close.
That bike is always ready to go in 2 seconds. Manky panniers ready to receive whatever I toss into them. I feel safe leaving it out front, at the grocery store, movies, restaurant, train station, gallery, bar, concert, beach...
Didn't cost me much. If it's gone when I come back, big whup.