Use of car covers? Pros-vs-Cons

[wvboxst3r]

Salt is an issue that can't be resolved with a garage(completely). It is in the air and on roads, the best option is lots of fresh water. The most damage is the under carriage not getting rinsed. I only spend about half of the year in the south. I m more concerned with paint damage from the birds and trees. The sun on the interior. Also the pine needles are the worst thing for drains(gutters on houses) so I worry about rain getting rerouted into car.

That is my reasoning for using the cover out weighing the possible damage from a good fitting soft water resistant cover.