PS $22 - Big Stack Bubble Battle

Man, what is going on here? Do you guys bet turn? River? Am I a huge wimp?

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (4 handed) FTR converter on zerodivide.cx

saw flop|<font color="#C00000">saw showdown</font>

UTG (t1665)
Button (t950)
<font color="#C00000">SB (t6470)</font>
<font color="#C00000">Hero (t4415)</font>

Preflop: Hero is BB with 3[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, SB completes, Hero checks.

Flop: (t300) 4[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets t450</font>, <font color="#CC3333">Hero raises to t1200</font>, SB calls t750.

Turn: (t2700) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: (t2700) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Final Pot: t2700