NO PURPOSE AT ALL

I think I'll write a poem
No purpose, rhyme or reason
Winter, spring, summer, fall
Just seems to be the season

To silly be, imaginate
Not sure that that's a word
But when a poem has no why
I guess I'll be absurd

Diddle dee and diddle dum
So silly from my pen
I've run outside of nonsense
Guess that means this is the end.