It's like running away to join the circus - my mum still thinks I went out for a coffee
Seriously, if you feel the urge, as Parkfell says, do the PPL to see if you like it and vice versa, but it's like any job, doing it professionally is a whole different ball game. And remember that airlines are not the only game in town - there's firefighting, filming, survey, etc. I remember pulling up at the terminal at Calgary in the Beaver and the DC 10 guys (shows how old I am) would come along and say they wished they were back flying them.