Please help me interpret this poem.?

Oh my God, you have no idea how much I hate this poem. The writer, Dylan Thomas, had a father who got old and weak and frail and was practically dying. So this idiot decided to write an entire poem about how you shouldn't just let yourself die and you should fight to the finish. It's a dumb poem by a dumb poet. So, yeah, that's what it's basically about. It's about never giving up hope for survival and you should fight to survive. Blah, blah, blah, I'm going back to Robert Frost now.