What are you going to replace your MacBook Pro, iPhone, and iPad with when they remove the audio port?
Its one thing to say you will do something and another thing entirely to actually do it.
I'm on the fence between a 4k MSI-GS series laptop with a GTX 1070m and Kaby Lake or a 1440p Razer Blade with the same CPU and GPU.
They're both cheaper than the 15" rMBP. The MSI GS is comparable in size to the rMBP but with a 2.5" drive bay, an M.2 drive bay and socketed ram.
The Razer Blade is like a more compact 15" MBA would be but with a 2.5" drive bay and socketed ram.
Both have headphone jacks.