Re: Only cracking I have done is
In the security business it's always a compromise between security and convenience. It's much more convenient of you don't have to lock your door, and make sure you have your key on you when you try to get back in. Your locksmith was telling you the other end of that compromise, if you do manage to lose your key, then it's very inconvenient for the locksmith to get through it. Which may mean more expense for you as you'll now have to replace the lock that was drilled out. It may mean more inconvenience for you if there are multiple copies of the key that may need to be replaced now, coz others have the key. It is however more secure, coz thieves can't pick the lock.
Only you can decide where in the spectrum between security and convenience annoys you the least. You makes your choices and you takes your chances.