You’re being eaten alive by wolves, and you spy your escape over a high wall.
1) give it all you’ve got and get over the wall to save your life, or
2) plan to climb only part way up the wall, figuring you’ll eventually get the rest of the way there. Never mind the wolves. Or gravity.
Analogy choice #1 is single payer.
Analogy choice #2 is the public option.
Guess who the wolves are.