Just looked and I've got just over 2,000 hrs, just under 13% at night, all in singles. I love night flying - smooth, easy to see traffic, and a great way to be all alone enjoying the privilege of being able to fly.
That said, it does carry increased risk. I won't fly over mountains at night (I live in WY) unless I'm following an interstate; likewise I won't fly in IMC over the mountains with bases lower than the rocks. My main precaution is to have a GPS with a good database of roads, a current terrain database, and an easy shortcut to view that particular map overlay TRACK UP. Flying airport to airport in WY is kind of not realistic; there aren't many. There are, however, a lot of roads, dirt or paved.
On the other hand I'm sitting in the Turks & Caicos Islands, having just flown back partly IMC in a single from St. Kitts, so overwater in a single doesn't worry me. But just in case I have a Mustang vest in easy reach, raft, ditch bag, VHF, PLB and survival gear in a bundle beside me. It's a risk too, but sometimes things worth doing carry risk that can be mitigated. At least a bit.
Whether it's worth doing is up to you.