Cats have no natural predators most likely wherever you are, so no. If you live in Turkey, or around there, fine. That's where they (rather, their ancestors) are native. They do have natural predators. If you live anywhere else then this excuse is bullshit just to make yourself feel better for being a shitty pet owner. It's bad for their health and for the environment. You aren't doing them or anything else any favors by not doing your job as a caretaker.