Of course Pub games aren't the same poker. If you've invested over £700 and 4 days of your time to play in a tournament it is about the money. Period. Lose sight of that and you're not going to be as successful a player long term as you should be. It's your money that went in - not DTD or PS - it doesn't matter - you have to maximise your return at that point.
You can leave some money in the pot after the deal so there's still a winner and someone gets the glory of winning - but I'd rather have the cash thanks.