If your arrows aren't coming off the bow straight when your feathers are wet, it's due to the bow's tune, not the wet feathers. Arrows will fly straight with wet feathers. Even sopping wet feathers are still lighter than vanes of equal length, so if wet feathers make your arrows go crazy coming off the bow, then vanes should really have them doing the bob and weave. And there are ways of keeping your feathers dry in wet weather.

How many times have I bumped my fletching against a tree or rock and ruffled my feathers? Not very often at all. I was taught to move like a cat in the woods, not like a charging rhinocerous. Seriously, anyone that wrecks their feathers simply walking through the woods, even crawling through brush on a stalk, they are moving far too carelessly.

How many times have I shot feathers that had barbs missing from the quills? A LOT. They shoot perfectly straight, even when one feather is missing half it's barbs. No sense in shooting with ruffled feathers since it only takes one quick swipe through a loosely closed fist to straighten them out again. Feathers that are really whacked out of shape, like ones that have been wet and had something laying on them while they were drying, they can be brought back like brand new with a little steam from a teapot.

Feathers do take a little more care than vanes do, no question about it. They are not as resistant to wet weather, no question about it. But they are so much better than vanes when it comes to properly balancing an arrow, controlling big broadheads and forgiving contact with rests, twigs and such - which also gives them less resistance when going through the hole the broadhead cut in the critter's hide for easier passthru's... As far as I'm concerned, feathers have got a lot more going in the plus column than in the minus column.