Am I too old to start
I have been teaching Karate for 25 years and in that time have taught beginners from 6 years to 60 years.
Presently we only take students from 8 years and up, and Senior classes start at 16 years old.
As you age you may find one or another technique harder to perform, but this should not deter you. You will be learning a Martial Art and as such it is self-defense system, not a display of superhuman ability and athletics.
There is no shame in not being able to pull off a triple spinning flip kick. Chances are that in a real situation a simple front kick would have been the better option anyway.
All the benefits of Karate in terms of self defense skills and improved health still apply, regardless at which age you start. With increased maturity you will also be in a better situation to judge what exactly YOU want to gain from Karate training, and you will be able to focus on that in our classes - this way you'll gain maximum enjoyment and benefit from Karate training, regardless of your age.