As mentioned--Gore Tex is like a layer of Saran Wrap inside your jacket. It can be loose or glued to a layer. It does not keep your outer shell fabric from getting wet or soaking-out. This can jeopardize the function of your goretex barrier. You need to maintain the DWR to help the goretex function it's best. This means cleaning and heating, reapplication, etc. Most jackets come with directions.
Goretex also has certain requirements for manufacturers. If your jacket is Goretex pro, it is seam-sealed and DWR coated, etc. as mentioned, moisture can still get in through seams and zips, etc.
Last, goretex is breathable, but not as breathable as other options--it is still a barrier that slows the breathing process.
Side-note: our Foulies on the boat would be insane for skiing. Wow.