He would have watched the latter just out of sheer curiosity.

So my questions are prompted by more than just sheer curiosity.

When the road seemed long and endless, what often kept him going was sheer curiosity.

Out of sheer curiosity, she went to the left and into the facility.

I came here, as I've told you, out of sheer curiosity.

Bright got it and had a drink out of sheer curiosity.

He hastily turned away, but after a time sheer curiosity made him look once more.

He looked down at the papers near his feet and read them out of sheer curiosity.

Out of sheer curiosity, I talked to him the second time.

You had no reason to be out there at all, except for sheer curiosity.