Have I turned into a calling station? 2 hands

I only just sat down. Both are against unknowns.

Hand 1:
I usually toss this on the flop but I often see people bluffing the ace here

Cryptologic
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Stack sizes:
UTG: $63.35
UTG+1: $20.70
Hero: $52.05
Button: $22.05
SB: $56.20
BB: $74.95

Pre-flop: (6 players) Hero is CO with
UTG calls, UTG+1 folds, Hero calls, Button raises to $1.5, SB calls, BB folds, UTG calls, Hero calls.

Flop: ($6.5, 4 players)
SB checks, UTG checks, Hero checks, Button bets $2, SB calls, UTG folds, Hero calls.

Turn: ($12.5, 3 players)
SB checks, Hero checks, Button bets $2, SB folds, Hero raises to $6, Button raises all-in $18.55, Hero calls.

River: ($49.6, 1 player + 1 all-in - Main pot: $49.6)


Results:
Final pot: $49.6

Hand 2:

Cryptologic
No Limit Holdem Ring game
Blinds: $0.25/$0.50
6 players
Converter

Stack sizes:
UTG: $13.90
Hero: $50
CO: $19.74
Button: $42.71
SB: $49.50
BB: $73.65

Pre-flop: (6 players) Hero is UTG+1 with
UTG folds, Hero raises to $2, 2 folds, SB calls, BB calls.

Flop: ($6, 3 players)
SB checks, BB checks, Hero bets $5, SB calls, BB folds.

Turn: ($16, 2 players)
SB bets $10, Hero calls.

River: ($36, 2 players)
SB bets $10, Hero calls.

Results:
Final pot: $56

hand 1: id almost be tempted to get to SD by calling all those weak bets. I think i probly fold to the push.

hand 2: stats would be very helpful in this hand. I like this line vs. an aggro villain who overplays TP hands, but there are alot of villains at this level who will still pay any price to chase their flush draw.

Hand 1 - I fold the flop... I don't think you can predict your outs in this spot and wind up with enough outs where calling makes the turn a good spot.

Hand 2 - Meh. I think you played it fine. I think you could argue for a river push as he seems kinda weak if he is holding the nuts. I think he pays off a push with a lot of worse hands like a lower two pair etc.