How people approach faith... varies a lot, II. A lot. I'd personally disagree strongly that the point of faith is to be difficult to believe. Faith is just belief in a not-yet-justified or unjustifiable proposition, t'me, with different ways to approach each sort.* Difficulty of belief -- due to lack of reason, ferex -- is tangential at best to the "point" of faith (which is mostly just to defeat solipsism, in the case of the not-yet-justified, and fill in metaphysical holes, for the other sort)... and often outright interfering.
Even with faith, there is an ethics to belief, and believing without sufficient (what counts as sufficient varies, of course) justification is something that can get very close to, if not outright become, immoral.
I would hold pretty staunchly that proper faith is not difficult to believe in at all, but instead flows directly from justified belief (mostly because faith picks up where justification leaves off, heh). When faith becomes difficult, the problem is considerably more likely to be in the belief than in the believer -- which is why faith only grows stronger by being challenged and changing appropriately... though what is appropriate is incredibly contingent, of course.
*You get similar propositions regarding faith straight from the mouths of christian theologians (which isn't terribly surprising, because I more or less stole the the definition from one, whose name I've forgotten for like the sixteenth time). You also get entirely different ones of a good handful of sources. Faith is a ridiculously huge topic, even without the religious trappings.