Here is a quote from Aristotle's "Poetics"
As for Comedy, it is (as has been observed) an imitation of men worse than the average; worse, however, not as regards any and every sort offault, but only as regards one particular kind, the Ridiculous, whichis a species of the Ugly. The Ridiculous may be defined as a mistakeor deformity not productive of pain or harm to others; the mask, forinstance, that excites laughter, is something ugly and distortedwithout causing pain.
Would you not call Innocent Smith ridiculous in one way or another? It cannot be denied that his Aristotelian "fault" is a virtue. Innocent Smith is ridiculous on purpose because he enjoys it. The characters in "The Birds" (an ancient Greek Comedy) are ridiculous because they are extremely lazy and decadent (although they do tell a few very clean, very funny, not specifically lazy jokes). I don't think we have to be ridiculous to love life as much as Smith does, but if we enjoy it (as I do) why not?