This really is the key. Make it not worth the effort to go for your bike. Your A->B bike needs to be just capable enough to get you from A to B. Have a secondar

This really is the key. Make it not worth the effort to go for your bike. Your A->B bike needs to be just capable enough to get you from A to B. Have a secondary cool bike for racing / weekends, if you're into biking. My current commuter bike that I got after having one stolen is a beater, and the lock that's on it cost me more than the bike. Sure, it's not the greatest to ride, but I can leave it locked to the closest lamp post next to wherever I need to go, and not worry a single bit. Also, I like to think that the big, shiny registration sticker helps persuade would be thieves not to bother. Where I live, bike registration costs just couple EUR, but judging from the absence of stickers in bike racks, hardly anyone does it.