Ugly is easier. If someone is uglier then most there more committed to keeping the relationship going knowing they’ve got a catch with Y-O-U. Those that don’t have the best looks will give you a bit of slack when you forget to shave or gain a Guinness belly. The pressures of worrying whether you’re companion is looking the other way will be reduced as well. A matter of fact ugly will allow Y-O-U to be yourself and that’s a beautiful thing. In the end you’ll probably find a sweet person under the skin that is more beautiful then the world outside could imagine.
FOOTNOTE- If ugly doesn’t hit your attraction zone well how about just “ordinary” instead?