Time Motivation

I was listening to "Cherokee Nation" by Paul Revere and the Raiders. Obviously I am a particular fan of that anthem as I think in many ways it represents everything that was right about Rock & Roll in the mid to late 60s and early 70s. It had a pulsing rhythym, a great hook, and a socially conscious message that hopefully made people think just a little bit when they listened to it. Kids could rock out to "hip" music that was "rebellious", but rebellious in an intellectually curious way that had some positive results.
Of course, it was not their only song like that..."Kicks" was sort of an anti-drug, pro-love theme...and so forth. but Cherokee Nation was (and is) my favorite Paul Revere tune. And so I started thinking about purchasing their cd.
Huh? Was their hey-day not 30+ years ago? yes...yes it was. And that essentially mans I have had my entire life, 34 odd years, to pick up their Greatest Hits cd and have not done so. But I might...oh, I don't know, tomorrow? Sure, sounds good.
Which brings up an interesting point. Why would I purchase it on 11-3-2005 and not, say...6-15-1994? Why not 3-1-2001? Or even 12-22-2010? Why select tomorrow or today or yesterday? After all, it is not exactly "Fresh new music". There is no sale on it to the best of my knowledge. I haev heard the song hundreds, perhaps thousands of times before. Ceteris Perebus, I will hear it dozens or even hundreds of times more in my lifetime. So why choose now as the "right" time to purchase the cd?
Why do people choose specific times to do something that could be done at essentially any point without impacting (theoretically) the direction and outcome of their life? After all, if you listen to say...Classic Rock, the top 10 songs this week are not much different than they were last week...last year...last decade...they pretty much are set in stone. If you never felt compelled to purchase Tom Pettys album before, what makes you choose to do so now?
And obviously this extends beyond music. You have always planned to try that new restaurant, the playhouse by the bay, or a trip to Canada but never have, then one day, out of the blue, you do. Why? What motivates or impels us? We are presented a multiplicity of choices every day...but only a few of them we actually do. How many people plan to learn to play the juice harp or crochet or not kill every plant they try to raise, but stuff always comes up.
Why choose today? And it must be something more than "Why not". There may be something to these theories about collective consciousness and collective will that makes it so on any given day a certain amount of people choose to start a certain project, but not too many, a certain number of people choose to buy a particular old cd but not too many...weird.