Funny Showdown

[blargh]

PokerStars No-Limit Hold'em, $0.25 BB (9 handed)

CO ($$29.05)
Button ($$25.35)
SB ($$19)
BB ($$23.30)
UTG ($$7.75)
Hero ($$22.15)
MP1 ($$47.95)
MP2 ($$12.80)
MP3 ($$18.60)

Preflop: Hero is UTG+1 with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls $0.25, Hero raises to $2.25, MP1 folds, MP2 folds, MP3 calls $2.25, CO folds, Button folds, SB folds, BB folds, UTG folds.
(I make a larger raise then I normally do because the players are showing little respect for preflop raises at this table so I try and narrow the field down as much as I can)

Flop: ($5.10) 5[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
Hero bets $5, MP3 raises to $10, Hero raises to $19.9, MP3 calls $6.35 (All-In).
(Standard pot bet, I get raised! Yikes, its either all in or fold. With a board like this either he has a set or an overpair. I hear a lot of people on this forum say that people don't raise on the flop when they have a set (they usually wait till the turn so I take my chances and shove it all in after some thought.)

Turn: ($41.35) 5[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

River: ($41.35) K[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

Final Pot: $41.35

Results in white below: <font color="white">
Hero shows Ac Ah (two pair, aces and fives).
MP3 shows Ad As (two pair, aces and fives).
Outcome: Hero wins $22.45. MP3 wins $18.90. </font>

WOW WE BOTH HAD POCKET ROCKETS!
Just thought you guys might be interested in seeing that hand. So, was all in a +EV play? Or is the chance of a set make my all-in stupid?