I fancied doing the same when I was at school. Then I found out I didn't have perfect colour vision and was told I could not be a pilot, period. 10 years later I found out that was actually complete fiction and now have a big stack of licenses from various countries, a great hobby which allows the Mrs and I to disappear off wherever and whenever we like, and a well-paid career elsewhere which allows me to fly my plane on expenses for business purposes.
Just trying to point out that there are all kinds of things which might creep out of the woodwork, you never know how things might pan out, and hence getting a medical and doing a PPL somewhere local is a good foundation for a low-risk, moderate financial outlay. Once you've put that first foot on the ladder you'll find yourself in a much better position to make a decision on the matter and won't have lost anything in the process.