"However, I was not re-raising becuase I wanted to keep people in the pot, but rather because I felt that no one was going to fold regardless"

I think this is flawed thinking. The fact that no one is folding is exactly why you want to three-bet. You probably have the best hand and you have a ton of outs to redraws. I think that had it been three handed or heads up, your line would have played better, but knowing that all these fish are calling any flop bets makes it a simple three-bet to me.