If you dont pursue it then you always wonder if you would of made it or not for the rest of your life. If you are to scared to take the risk, then dont pursue aviation. If you are ready and willing to take the risk, becasue the pay-off is great, then go for it. If you ask any captain, "Is it worth it," almost all of them will say yes! The choice is yours
1.Sit behind a desk for the next 20 years
2.Sit behind a cockpit more than 5 miles high in the sky for 20 years (not to mention the great view)