[OatmealJoe]

With a strong draw, you are almost even money to win (if he calls), not counting folding equity. You are also guaranteed to see both cards. If you just call and miss on the turn, you may not have the odds to call a large bet. Additionally, if you hit your hand (i.e. a flush hits), he may not pay you off. So you may win less when you hit your hand on the turn, and get pushed off your hand if you miss the turn.