My one Aunt is almost completely deaf and wanted to get a cat that shared the non-hearing lifestyle... she ended up adopting a little pure white, blue-eyed baby whom she named Princess Maple.
After doing research, she found that white, blue-eyed cats are in fact more likely to be deaf at birth, but all aren't necessarily deaf.
Also, if the cat is not born deaf, it has just as much chance as any other cat to become deaf (usually due to old age). Recently, my aunt kitty-sat her friend's 3 pure white cats: Mama, who is only paritially deaf, one of her babies who is fully deaf and another non-related pure white cat that was fully hearing. Princess Maple responds to vibrations of people walking or pounding the floor to get her attention
... also, my Aunt has taught her sign language for things like "cookie" and "dinner"... I think it's great when people decide to adopt non-hearing cats and take the extra time with them that they need instead of looking at it as a burden... good for you!