I think if you look after your rifles to the best of your ability and respect them like you would expect to be respected yourself both PCPs and springers can be reliable tools and only need routine work on them, i.e. breech seals, new springs on springers, new seals on a pcp etc.
I have never had 1 problem with either 2 of my PCPs or springers to that fact and I shot my R10 many, many times last year.
Nothing is ever un breakable though and from time to time even a top of the range Formula One car has problems and needs fixing.
If you were to read Jacks post in regards to his HW95