Raising

Why don't people fold to a raise. Always baffles me.

Game #2892751494: Hold'em NL (25/50) - 2006/07/04 - 16:20:01 (GMT)
Table "STT1 2974110 - 1" Seat 9 is the button.
Seat 2: Tessy666k (2048 in chips)
Seat 3: Watman (1555 in chips)
Seat 4: leseth29 (843 in chips)
Seat 6: Cdarwin (1622 in chips)
Seat 7: dutch1969 (1485 in chips)
Seat 8: RumTiddle (968 in chips)
Seat 9: Ace_l0w (899 in chips)
Seat 10: _galileo_ (580 in chips)
_galileo_: posts small blind 25
Tessy666k: posts big blind 50
----- HOLE CARDS -----
dealt to RumTiddle [Js Jc]
Watman: folds
leseth29: folds
Cdarwin: raises to 150
dutch1969: folds
RumTiddle: calls 150
Ace_l0w: folds
_galileo_: folds
Tessy666k: calls 100
----- FLOP ----- [Kh 2h 8d]
Tessy666k: checks
Cdarwin: bets 150
RumTiddle: raises to 300
Tessy666k: folds
Cdarwin: calls 150
----- TURN ----- [Kh 2h 8d][As]
Cdarwin: checks
RumTiddle: checks
----- RIVER ----- [Kh 2h 8d As][7s]
Cdarwin: checks
RumTiddle: checks
----- SHOW DOWN -----
Cdarwin: shows [Jh Qd] (High Card Ace)
RumTiddle: shows [Js Jc] (A Pair of Jacks, Ace high)
RumTiddle collects 1075 from Main pot
----- SUMMARY -----
Total pot 1075 Main pot 1075 Rake 0
Board [Kh 2h 8d As 7s]
Seat 2: Tessy666k (big blind) folded on the Flop
Seat 3: Watman folded before Flop (didn't bet)
Seat 4: leseth29 folded before Flop (didn't bet)
Seat 6: Cdarwin showed [Jh Qd] and lost
Seat 7: dutch1969 folded before Flop (didn't bet)
Seat 8: RumTiddle showed [Js Jc] and won (1075) with A Pair of Jacks, Ace high
Seat 9: Ace_l0w (button) folded before Flop (didn't bet)
Seat 10: _galileo_ (small blind) folded before Flop (didn't bet)