Voted for

• It's Fun!
• It's helpful to know what others think.
• I do it for the profit! (BONUS: on average how much do you make per poll?)

This question is a good honesty test.
Most (probably almost or literally all) of us do this primarily for the money.
Even if they say otherwise.
I make between $0.30 USD and $0.80 USD per poll on average.
I rarely make $1 or more.