Nothing about the sonnet is perfect for the love poem, either. Genre simply provides a way for the reader to look for things that have been done. A form is a useful thing to use. It has history and resonance. It informs you as to the way things have been done in the past.
“With small cuts Cro-Magnon man recorded the moon’s phases on the handles of his tools, thinking about her as he worked. Animals. Horizon. Face in a pan of water. In every story I tell comes a point where I can see no further. I hate that point. It is why they call storytellers blind – a taunt.”
Anne Carson | “Short Talk on Homo Sapiens”