For you I'm sure that PPL is the way to go but I don't agree that people should only consider the NPPL for medical reasons.
If all you want to do is bimble around day VFR with up to 3 mates then the NPPL is simpler merely because you don't have to faff around with the annual medical and the amount you'd spend on that pays for your time with an instructor.
So, while I fully accept that the costs difference to get the licence is minimal, the cost to keep your licence valid (especially given microlight and SLMG allowances) can be considerably lower or, to look at it the other way round, the costs can stay the same for considerably more hours.
As I say if you're a day VFR bimbler who might want to go abroad once or twice (and I think that's a fair number of private flyers) then I really don't see why you'd want the added expense and embuggerance of the PPL.