Why do I need to choose between being able to play SCH or SMN effectively if I don't have to choose between WHM and BLM?

It's freaking ludicrous. And before you cite that it makes "thematical sense" because your class is choosing a specialization, we can still switch between the jobs at will and play them so that won't fly. The issue is only about the numbers. 15 MND or 15 INT is a lot. If I want to do endgame content on my SCH or SMN I either have to

A. Be not as effective in my role
B. Choose one (which goes against the entire point of the Armory System and the ability to do everything on one character)
C. Farm 10k seals so I can respec any time I want to do endgame as the other job.

AND ON TOP OF ALL OF THIS, the stat choices are braindead. Unless someone's being cute you're going to put 30 into your main stat. Done and done.

Please take it out SE. It's only going to get worse when more classes have 2 jobs.