I would see no reason for Bacon to write the poetry as well (considering that only the plays were profitable).
Poets and playwrights rarely write just for the money (poets, especially). And Bacon (or any other Oxford swell) wouldn't have needed the money.
Just due to the poetry, I think its highly likely that Shakespeare wrote the plays. I believe he was an artistic genius who overcame his poor education. His plays are brilliant enough to support this assertion.
If he overcame his poor education, why did he seem to have trouble even writing his own name? We've got six of his signatures and all are shaky. A man who had himself written down thousands of lines of complex verse would have had a steady hand, it seems to me. Of course, perhaps he had some sort of palsy from all of that writing!
It's fun to speculate, but frustrating, too.