Why cum on her face?

I have a genuine question for anyone who happens to drop be here.

Now I quite like to cum on a girls face if there's some heavy foreplay going on, or shes sucking me off, or I tied her to a tree in the park and fucked her face... oops too much information lol.

But....

If we are hard at it and I'm fucking her pussy. I have never ever thought to stop and pull my cock out of that lovely place so I can finish myself off with my hand all over her face, or anywhere else for that matter.

Isn't that spoiling the moment?
Not to mention removing the possibility that she will cum too, or soon after.
Yeah, cumming dosen't mean I'm going to stop.... just that it will be a little while till the next one. I might stop and let her lick it clean if she wants to though, before I put it back in.

But back to the question. Why would you break the flow like that to cum somewhere else?

It's on a LOT of the videos on here.

Mabey they just do it on the vids because its more visual.... but a creamie pie is quite visual too.

Opinions please.....