Now that many sunscreens cover UVA and UVB (which is a recent thing) sunscreen is a bit more useful and I do carry it.

I never bothered carrying it before, because I don't burn easily. But, I carry it now that its full spectrum.

Lip balm is more important to me, and I carry the SPF30 kind. My lips tend to dry out.

The sunscreen that doesn't cover UVA and UVB both is mostly just for comfort... according to consumer reports... (yeah, I guess I'm a bit of a fanboy about them). It keeps you from burning but still lets in UV rays, so its unlikely to really keep you from getting cancer.