real door locks

You can do anything you have the money and inclination to do. You just have to decide it it's worth it in your mind. To my mind, there is just no sense in spending big money on a lock when the surrounding parts are easily defeated.

And there's always the possibility that someone seeing that fancy lock and reinforce door will wonder "What the heck is in there that is so valuable?".

IOW, save your time and money.