I really do hate this game! How do people do this?

What are you supposed to do when people call a $12 check raise? Damn I am frustrated!!

Table "La Sola" (real money) -- Seat 1 is the button
Seat 1: nouse4name ($200.00 in chips)
Seat 3: scgolfer ($248.00 in chips)
Seat 4: retlawkershi ($218.00 in chips)
Seat 5: johnny9x ($51.00 in chips)
Seat 6: Dr kalmonkey ($106.00 in chips)
Seat 7: JoRoNa ($170.00 in chips)
Seat 8: mytipsatrisk ($141.00 in chips)
Seat 9: The Streak ($109.00 in chips)
Seat 10: <*((()))<< ($93.00 in chips)
scgolfer: Post Small Blind ($1)
retlawkershi: Post Big Blind ($3)
Dealt to scgolfer [ 7c ]
Dealt to scgolfer [ Kd ]
scgolfer said, "nh"
johnny9x: Fold
Dr kalmonkey: Call ($3)
JoRoNa : Call ($3)
mytipsatrisk: Fold
The Streak: Fold
<*((()))<<: Fold
nouse4name: Fold
scgolfer: Call ($2)
retlawkershi: Check
*** FLOP *** : [ 7s 4c As ]
scgolfer: Check
retlawkershi: Bet ($3)
Dr kalmonkey: Call ($3)
JoRoNa : Fold
scgolfer: Call ($3)
*** TURN *** : [ 7s 4c As ] [ Kc ]
scgolfer: Check
retlawkershi: Check
Dr kalmonkey: Bet ($6)
scgolfer: Raise ($12)
retlawkershi: Call ($12)
Dr kalmonkey: Call ($6)
*** RIVER *** : [ 7s 4c As Kc ] [ 5d ]
scgolfer: Bet ($6)
retlawkershi: Raise ($12)
Dr kalmonkey: Call ($12)
scgolfer said, "damn it"
scgolfer: Call ($6)
*** SUMMARY ***
Pot: $90 | Rake: $3
Board: [ 7s 4c As Kc 5d ]
nouse4name didn't bet (folded)
scgolfer lost $30 (showed hand) [ 7c Kd ] (two pair, kings and sevens)
retlawkershi bet $30, collected $90, net +$60 (showed hand) [ 6c 8c ] (a straight, four to eight)
johnny9x didn't bet (folded)
Dr kalmonkey lost $30 [ Js Ac ] (a pair of aces)
JoRoNa lost $3 (folded)
mytipsatrisk didn't bet (folded)
The Streak didn't bet (folded)
<*((()))<< didn't bet (folded)

Calls $12 with a gutshot straight and Paradise rewards him??????

From a pot odds standpoint was it a good call of the $12 for the flush possiblitly? Maybe it is a good call? Im just not very lucky. :(

Fold pre-flop. King-Nothing offsuit is a fold from the small blind with 2 limpers in front. Dominated offsuit hand with no straight or flush possiblity. At best a blind steal/defense hand. Particularly since you had to call 2/3 a small bet.

Flop is a close call because your call closes the action, probably even still a fold given the small pot size. Heck, the more I think about it, the more I hate that call. You have a weak hand unlikely to improve and because the King of Spades is out, you have a tainted out, so you'd be better off drawing to a gutshot.

The chaser had good pot odds to cold call 2 after the turn given the gutshot + flush draws and 2 others contesting the pot. However, the flop call was weak (but still better than yours.) You just can't drive out draws like that in limit.