I say this in total seriousness, and you know it because I'm in the face of constant rejection (form letters this morning from both AGNI & the Nashville Review):
I would rather spend my whole life writing poetry and getting form rejections than spend my life not writing poetry or getting form rejections. So I guess this means I'm going to keep at it. With that in mind, tomorrow is the first day of April, which means National Poetry Writing Month. So you should probably keep at it, too.