The patterns in poetry date back to when writing was less common. They're mnemonic devices.

Today, they're still valuable when performing poetry.

I tend to not follow typical rhyme patterns, use off rhymes, non-ending lines, alliterations, etc. instead. I always found the typical rhyme schemes I was taught in school stifling, but as I've practiced my craft more, I have gotten more comfortable incorporating them into my toolbox.

Anyway, so many non-poets commenting in this thread. People who are serious about poetry know that they're unlikely to make a living off it. We write because we get joy out of making and sharing our art. A lot of poetry is still performed at open mics and poetry slams. And most of it is shared with people we know who appreciate it. In other words, most poetry isn't written with the intention of ever publishing it.

It's something we enjoy playing with, in other words. And until a machine can experience joy and playfulness, they're not doing art. Only copying it.