Rear mech inner cable replacement
I have a Ribble Gran Fondo with Shimano 105 groupset which I bought new 4 years ago and have covered only 4000 miles during that time. Having had a rear mech cable brake in a shifter in the past I decided to replace the inner cable. Removed the bar tape, releaed the cable at the rear mech and pushed it through so that it came out of the shifter. After inspecting it, the cable looked in very good condition, so instead of switching it for a new one, I cleaned and relubed it and put it back in position. I couldn't see the point in replacing it if it looked as good as new. Is this okay or should I have put a new one in anyway?