I've never sailed a cat, so MHO may be worthless, but I have done some reading.
1) Slamming: cats can, depending on the hight of the bridge. Just slow down. Since a cat can't heel to release energy, it's converted to speed. When you can't stand there because it's accelerating from 10 to 20 it's time to reef. Big cat sailing in a gale-Awesome waves, and sail control.avi - YouTube
2) gimbaled stoves: You'll also won't find cup holders. Unnecessary. MULTIHULLS: 1995 Privilege 45' Catamaran For Sale: VELERO - YouTube
3) Maintenance. A x length cat has 1.5 times the storeage of a x length mono. So I assume the maintenance is also 1.5 the corresponding mono. Docking is a different matter, you take up two slips or must be on the end.
4) Cats don't rock. Sounds like "land sickness" in "Water World."
5) Handling. Cats come in 3 variations, 1-2 wheels rear outside (Priv45, good visibility to dock, wetter steering.) Inside cabin and outside, not so much. I assume you get use to it, like changing from a sports car to a RV.
I suggest renting out one for a trip or day sale before deciding mono/cat.