Indeed, why not make 5 different planes for different purposes instead of one that does everything... I mean, it's not like they're also building an aircraft c

Indeed, why not make 5 different planes for different purposes instead of one that does everything... I mean, it's not like they're also building an aircraft carrier that can launch ballistic missiles, cruise at 50 knots, go up rivers and also submerge... or are they :-)?