Haikus are delightful for bad poetry. Traditionally just 17 syllables long, they allow you to get right to the poem, while being short enough to keep the poet from going too far off into the weeds. Haikus are easy. As long as the poet is willing to dispense with most traditional restrictions beyond length (this is bad poetry after all), they can quickly and cheerfully create haiku on nearly any subject.
Writing a good haiku is of course another matter.