Good Lord, you are either very unlucky or live in a bad neighborhood. That's got to be pretty hard to take. Bike thieves, car thieves and horse thieves all should be treated the same. Hang 'em high.
All three bikes were stolen from bike racks in downtown Portland. The Bontrager was stolen from a rack not 20 feet from where a security guard sat 24/7. His response "I'm not paid to watch your bike." Now I rent a bike locher. Out of sight, out of mind.