Sometimes Cal, the conditions just don't allow you to ride the trails. Last spring we spent the whole morning or more slogging through 5 or 10 miles of snow, to find we could not complete our loop, and had to go back through the same deep muck.
Wet changes everything in the woods. Roots get slippery, rocks get slippery, tires plug with mud, neither end of the bike grips, you can't turn, brake or climb. Some things, like lowering tire pressure, softening the suspension can give relief. But overall, I say forget it. Hope for better conditions next time out. Happens to the best.