Computer Keyboard Worn Out Again

I just noticed that alot of the keys on my keyboard are wearing well off of it again, not that I always need to find the letters and numbers but I type so much for work purposes online that my keyboard suffers the consequences it seems. How is your keyboard doing? Are all the letters, numbers and symbols all readable and how old is it? I think this one is slightly less than 2 yrear old. The letters A,S,L,N,M,Y,U,I,T,Y,E,C,D,K, and H are especially worn off. Do you think I should get a new keyboard or try to paint the letters back on somehow and with what kind of "paint"?