system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do we assure that there are enough key/keyhole combinations for doors to be safe?
gpt
We don't, not really. Most of the doors in the USA can be picked with your average rake/tension wrench combo in under 5 seconds for anyone who has done it once or twice before. It's a really simple lock.

Car doors have more tension in them, so you need a slightly stronger tension wrench to counter act it, and you might need a specialized pick, but they come in the standard pick set.

Your various padlocks are also typically very insecure.

High-end locks are much, much more precise than these cheap, common locks. Laser etched grooves and all-that being so accurate that they're nearly impossible to pick or bump. You need the key that goes to the lock, otherwise you're generally not getting in without breaking it.