99 on scary board

[TStoneMBD]

if i am raised on the river, i am beat close to 100% of the time.

villain called the turn despite the ace falling. this would mean that he either has a king, ace high, a middle pair or a draw.

he didnt checkraise the turn, so i find an ace unlikely.

he called the turn, so if he has a middle pair hes paying another bet on the river.

if he has a draw he may very well call the river with queen high. yes, the players at 3/6 are really this bad.

im not arguing one way or another, im just merely explaining what value there is in betting this river for those that do not know.