You fellow guitarists aren't old at all lol. I'm almost 30.
Anyways.. I signed up for SAMI when I first bought my guitar a little over a year ago. I didn't really have the time to stick with it so, I cancelled my membership. I'm back now (as of last week), starting all over and I'm loving it. My practice sessions are so much more intense than before and, I'm learning at an accelerated pace compared to my previous attempt. Can't wait to see where this road takes me!