There is no one speed for landing an airplane.
If you really want to be in command of your plane, you should be able to land it with no flaps, half and full flaps, and you should know preferred speeds for each. If your approach speed is too slow, the risks are minimal time to flare and high sink rate. If your approach speed is too high, you can float forever, possibly overcontrol in the flare and maybe increase your brake wear. And we've not even talked crosswinds...
You should be able to fly a variety of speeds to fit in with slower and faster traffic, for starters. Also, dodging a buzzard in the pattern can upset your speed profile, so be able to handle the variations.
There's lots of different styles of traffic patterns, and some people will even tell you that their's is right and everybody else's is wrong. Learn to fly all the different styles, and then choose the one that you like and that fits in with each particular airport at the conditions present at that time.