biz_fish,
GO FOR IT!
The structure of the PPL course allows you to build on your experiences and you may find that many parts of flying just slot into place. It is incredibly rewarding and above all - fun.
Ok it's not cheap but it needn't cost mega bucks either - there are a variety of aircraft to get yourself involved in.
Check out the 'spare seats' thread on PPRuNe and get yourself aloft with other folk whilst you are learning.
The only regret you may have is not doing it
(Edited to say our posts have crossed)