Taste? So what if food may taste like shit? If you know things to be okay, then you eat them.
Smell? My sense of smell used to be very sharp, but it's been de-tuned after spending time with animals. Can still smell that my workplace is full of exhaust gases, though, despite my boss making noises to the contrary.
Hearing? I've always been surrounded by music, but if I lost my hearing, I still have enough music in my head to last for years. There are also ways to play instruments using vibrations.
Sight? Losing my sight would be a terrible blow, especially as my memory is very sight-related. However, sight is bound to deteriorate with time, and it might just happen quicker than I expect.
Touch would be the biggy, I think. My Mum has lost nearly all feeling in the soles of her feet, and she now has worries about walking unassisted. Blind and partially sighted people make up for their loss of vision by developing their sense of touch. If you couldn't see your loved ones, at least you could touch them.