degnic is right no-one would fold, because the pot odds are way to good and he would call you with any two. (maybe on KTT he could lay down 98o

) But that doesn´t mean that you can´t do that for value^^
Example: on NL 25, your stack 5$. You have AK and you raise from MP1 1$, MP3 calls and others will fold. Flop comes 44J. You know that your opponent is aggressive and he could raise with nothing then check/all-in if he bets 1,5$ into that pot. You need to have courage to do that and also you have to know what kind of hands MP3 could call. And it is not always good to give opponent free card. T or 9, isn´t so nice cards and he might catch one of his 6-outers.
Contibets are that way better because no-one would re-raise mostly with nothing, because they know that you are going all-in and they are probably way behind.