Were they both on a flush draw? No one had an 8 or pp? Id actually expected to be called here.

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) from (Format: FlopTurnRiver)

MP2 ($19.20)
MP3 ($24.65)
CO ($25)
Button ($8.90)
SB ($15.20)
Hero ($47.45)
UTG ($11.40)
UTG+1 ($27.25)
MP1 ($10)

Preflop: Hero is BB with Q, K. MP1 posts a blind of $0.25.
2 folds, MP1 (poster) checks, 1 fold, MP3 calls $0.25, 1 fold, Button calls $0.25, SB completes, Hero checks.

Flop: ($1.25) Q, 8, Q (5 players)
SB checks, Hero bets $1, MP1 calls $1, MP3 calls $1, Button folds, SB folds.

Turn: ($4.25) Q (3 players)
Hero bets $2, MP1 folds, MP3 folds.

Final Pot: $6.25

Results in white below:
No showdown. Hero wins $6.25.

I always play quads fast. They rarely give you credit, and if the have a PP, they just made a full house and have trouble folding.

I don't mind your play -- you bet half a pot on the turn, and if either of them had a pair or an 8 then you get a call. They didn't, so you didn't.

The only other option is to check and hope for an A or K on the river, then overbet it...because a guy who makes QQQAA is likely to call for the chop. Because they won't give you credit for the quads.

Correct play. Let the flush draw chasers pay and thank the poker gods if they hit, most PP will call too.