It's the opposite for me. With my personal mid-2015 MacBook Pro I love to sit down and type on it for hours, creating great software and documentation. With the newer MacBooks I try to avoid long typing sessions or I have to mess with dongles and keyboards for a good typing experience. On a train an external keyboard is not an option so the newer MacBook stays in my bag.

For portable use I'd rather throw a 12" MacBook in my bag.