Value bet or bluff?

Today I have played an interesting hand. I don't want to give player names so I will censor them manually:
Seat 1: xxx ($572.99)
Seat 2: me ($1303.25)
Seat 3: villain ($2304.00)
Seat 4: xxx ($745.00)
Seat 5: xxx ($1089.00)
xxx posts the small blind of $5.00
xxx posts the big blind of $10.00
villain is the button
*** HOLE CARDS ***
Dealt to me [As Ts]
xxx folds
me raises $40.00
villain calls $40.00
xxx folds
xxx folds
*** FLOP *** [8d 3d 7c]
me checks
villain bets $90.00
me raises $230.00
villain calls $230.00
*** TURN *** [8d 3d 7c] [Th]
me goes all-in with $1033.25
villain calls $1033.25
*** RIVER *** [8d 3d 7c Th] [2s]
*** SUMMARY ***
Total pot $2618.50 | Rake $3.00
Board: [8d 3d 7c Th 2s]
villain won ($0.00), mucks
xxx won ($0.00), mucks
me won ($2618.50), showed [As Ts]
xxx won ($0.00), mucks
xxx won ($0.00)

As you can see, my all in bet on the turn looks more like a desperation bluff. On the other hand I was really desperate when the villain insta-called. I thought I was drawing dead. The thing is, I really didn't know what to do. I was almost sure that I had the best hand on the turn but I was also sure that the villain would not fold any kind of hand for a standard sized bet and I really wanted him to fold given the board. So, actually my bet was merely a desperation bet to protect my hand which, I guess seems pretty much like a desperation bluff and which as a result became the best possible value-bet. This kind of situations are really what strikes me as extremely exciting in poker and they get me addicted to the game. And hopefully my desire to create this kind of situations is gonna be my most valuable asset in becoming a great player.