pop quiz

[Bez]

You have just revealed a huge leak in your game. If you think someone is bluffing you on the river, the last thing you want to do is raise, as already pointed out.

If you raise:

When you are ahead, your opponent will fold and you gain $0 extra.

When your read is wrong and you are behind, your opponent will either:

a) call, costing you 1 big blind or
b) raise, costing you 1 or 2 big blinds depending on your move (hopefully you'll be folding to a raise, but who knows given your raise?)

There is little chance your raise will fold out a better hand at the micros, somewhere close to 0%.