If you are having to still and wait on something/someone for a while - a trike is a comfortable, level seat as opposed to trying to sit comfortably on a "slant" - like a 2-wheeler rests on the kickstand.
:Agree: Trikes are much nicer than bikes,when you get caught in stop-n-go traffic.
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Because I "look" cool on my trike! And I "feel" cool on my trike. Therefore, I "am" cool on my trike!
Cool is the rule!