It'd be a toss up between, sight and touch. I do think that sight is probably the more useful of the two, but feeling one: feeling is major part of intimacy, two: you'll know whether or not you hurt yourself to stop yourself, and three: helps with balance.
Sight just because it would really suck not being able to see anything. I thought about this while I was pretty stoned and it made me really grateful to have my vision and my other senses. Lol Weed isn't always bad. Haha
crap. I didn't read the question and thought you meant, out of all your five senses which one would you rather lose.. so of course I clicked taste haha.. in reality I'd rather keep my sight. that's the last one I'd hang on to!
sight. if I couldn't see my loved ones and sunsets and everything beautiful that would be devistating to me. though not being able to hear music or loved one voices or being able to SPEAK your mind that wouldn't be too nice. I could do without taste or smell though. I would eat much healthier that way and I wouldn't smell skunk and puke...yuck
Touch would definitely be my choice. People live happy lives with no sight or hearing, but touch can give you a sense of comfort and warmth. You can stilll learn to communicate through sign and see the world in your own way.