What's Harder Than Writing Good Smut?

I've seen a lot of writers complain about sex scenes, but those don't bother me. Sex is (relatively) easy. Once it's decided where I'm going, there are only so many ways to get there, after all.

An argument, though…oh man.

I've been working on this for days. Now, granted, they've been awful days, marred by over-work at the day job and exhaustion and brain-deadery, but I have been trying. For days.

It has to start in one specific place, and land in another. It has to make sense, be consistent...