Romance is a challenging genre. The HEA formula should be so simple, but that's part of what makes it difficult. Plus, I crack up when writing the smexy scenes. Can't do it.
Not that other genres aren't challenging too. I'm much better at blowing things up, and with unusual critters. I write UF too, Silver-Midnight. For some reason I tend to get more UF ideas than anything else. I'm ignoring them now in favor of my post-apocalyptic-light alternate reality thriller. There's a huge market for the PALARTH genre, as I'm sure you're aware.