Safron - I have the same thing. I'm allergic to everything under the sun that I can breathe in. My best friend is the same way. Both of us have cats and our cats don't bother us. Also, from what I understand, kittens don't have as much dander as adult cats, so if you get a cat as a kitten your body can develop the immunity as the cat gets more dander from cleaning itself.
One other helpful hint - Zyrtec is absolutely a godsend!!! I'm sure you've seen the commercials talking about how this
drug is approved for indoor allergies as well as outdoor. I hate to sound like a commercial, but they are right.
The other really good thing about Zyrtec is that it has minimal reactions with many drugs that other allergy meds do, and it really doesn't cause drowsiness. The side effects are minimal.