Unfortunately, lock picking videos and equipment abound via the internet. If someone wants badly enough to get into your house, they will. Hardening the measures you already have to the best of your ability, probing for potential weaknesses and using multiple/overlapping security tools and tactics is about the best you can do. Most of us can't afford the repair costs of actually testing our physical security devices against brute force/destructive level attacks. With higher quality deadbolt locks installed, TJ makes an excellent point about having a spare key somewhere outside your home that's much tougher to hack than “under the doormat”. I personally leave a key with a highly trusted neighbor so that they can gain emergency access if needed. Either of these solutions will save you the expense of a qualified locksmith service visit to regain entry to your own home.