It starts with an idea, thus it is conceived
It grows over time, forming line after line
It consists of nouns, verbs, adjectives
It sometimes takes minutes or hours, or days ,or years
to fully form, It can be laborious starting with a rough draft
at times several papers pile up in the trash
It can consist of similes and metaphors, or take a short story form
It grows more until it is complete, thus the poem is born, after it arrives like a proud parent you look at the poem and declare it is good and ready to share

The poem can be personified, it can touch human emotion it can invoke sadness  and or happiness or at times touch our funny bone or remind us of a past romance, or the good old days

In the end the effort can be worthwhile especially if it can produce a smile