"I don't have the time to travel".
This is the most common excuse that a trainer or coach gives for the fact that they don't continue their education. Personally, I think it's a lame excuse. Anthony Renna has now made it impossible for anyone to use that excuse. Anthony recently started StrengthandConditioningWebinars.com. It is the BEST Collection of Presentations from The World's TOP Strength Coaches, Physical Therapists and Personal Trainers, All in One Place!! Seriously, you can watch these presentations without having to travel and in the comfort of your own home. As Anthony says, "You can watch them in your tightie whities and no one will know". If you are not continuing your education and always striving to learn more, you are in the wrong profession.... do your clients a favor and refer them to someone else.
You have no excuses left....