Can't really enjoy it? I always use a case and a screen protector, and I enjoy the hell out of it.
I'll tell you what I don't enjoy - a scratched screen/phone. But I'm very OCD and even the faintest micro scratches bother me. I also (because of the OCD) constantly clean the screen. If I didn't have a screen protector on it, the lens wipes I use would probably completely remove the oleophobic coating in no time. And once that's gone it's a miserable experience trying to keep the screen clean. And it doesn't have that nice feel to it anymore. To each his own. I totally understand either perspective. No right or wrong. I'll keep using one (Best Skins Ever, though I may give a glass protector a shot soon) because the day I decide to stop using one I'll probably drop it in my driveway and put a ton of deep scratches in it. My wife did that with her 5.