That's the voice of a child speaking, Greg. Sorry to be condescending but we are not talking about Mickey Mouse money or a career at McDonalds. Being a commercial pilot is a technically and intellectually demanding career. It is not for anyone who 'dreams' of flying an airliner after playing Flightsim on his or her PC, just as a fifteen year old who kicks ass at COD on the Xbox 360 isn't necessarily cut out for a career in the SAS.
Yes, you only get one life. Yes, aim high, follow your dreams, fulfil all the cliches you can find BUT go about it in a carefully considered, mature and well-researched way. Don't burn £100k of someone else's money when you're still growing up, maturing and learning what you are capable of in life. Don't get yourself in huge amounts of debt that will blight your twenties and thirties because you 'just had to try it'. This is especially true now, as others have said, when THERE ARE HARDLY ANY JOBS.