I for one have a very clear idea as to why I have started a CPL groundschool course as opposed to an ATPL. I am a 36 y/o PPL and aspire to become a flying instructor and instruct part time at weekends along side my current career as a project manager.
No pressure with 36 month expiry for an expensive IR/ME and no guarantee of a career changing job at the end of it anyway. After much thought, instructing part time and the odd pleasure flight as a CPL is the way for me....
just my thoughts.....