One reason I like longer lines, in those very few cases (way less than 1% of code lines) - it bundles logically several easy-to-read things, ie more complex 'if' or larger constructors. We talk about Java here just to be clear, for more compact languages those numbers can get lower significantly but same principles apply.

Doing overly smart complex one-liners just for the sake of it goes completely against what we write here, I've seen only (otherwise smart) juniors do those. Harder to debug, harder to read, simply a junior show-off move.

...unless you really want to prove grandparent's point.