It should be easy to participate because that is what is being asked for, it is after all "the free encyclopedia that anyone can edit."
However, I am being asked to contribute, and asked to encourage others to contribute, such as noted here: http://www.marketplace.org/topics/tech/wikipedia-loses-contr... Or more directly, read the statements from Jimmy Wales here http://www.firstpost.com/tech/wikipedia-in-india-we-needs-mo... where he says Wikipedia's interface needs to be simplified and asks for more regional language contributors. I've tried to turn on Indian friends/co-workers to editing Wikipedia, but they found it extremely daunting.
This is in sharp contrast to open source projects I've contributed to, such as Drupal, which I'll note I have quite a few contributions there, so I'm certainly no stranger to putting in a lot of work to participate in something.
The difference with Drupal is that there are very clearly defined rules for how to participate, clear instructions for how to do so, and new contributors are helped along in the process to get their code right, rather than being told their contribution is worthless, which is the attitude I get anytime I try to contribute something on Wikipedia. And that's not to say there isn't attitude in the Drupal community, there still is, but at least there one can still contribute despite it, whereas at Wikipedia, it just becomes a lost cause.