I used screen protectors up until about 2 years ago. When the 6S came out I decided to “take a risk” and try going without one. Never had any issues. Of course all my devices have gotten slight micro scratches, but they’re only visible if you’re really trying to find them.
To me, ever since the curved screens came on the 6 series, having a screen protector has a hugely negative effect on the experience of using the phone. It’s worth the small risk to go without IMO.