Once upon a time, phones were indispensable because the display was as robust as chilled butter. Nowadays? Not so much.
Full disclosure: I used to be religious when it came to putting a screen protector on my phone. It came to the point that I would buy the protector before I bought the phone, so I could burst onto the protector the moment the cling film came off the screen.
But today? I have not had any protection on my screen in a few years. The glass technology is so advanced that there is little chance that your screen protector will be harder, more durable, or better protected against fingerprints than the supremely gorilla glass screen on your phone, with far more advanced anti-fingerprint and anti-glare coatings.
If your phone spends 90% of its day safely in your pocket, what exactly do you protect it from?
There are of course exceptions to this rule. Although my iPhone spent all day in my pocket, away from anything that could damage it. My wife's iPhone spends all day in her purse, which looks more like a wooden chopper filled with make-up compacts and keys than the soft, secure bag in my pocket. In this case, we are ready to use protective films that serve as ritual sacrifices to protect the actual screen of your phone.
For more information on why you may likely throw your screen protection overboard (and when) fade in is a good idea), read our detailed description of the topic at Review Geek.