You would save hundreds of dollars getting a 13-inch laptop with a retina display that is feather-light. Then take some of your savings and get a monitor as big as you want for home. When home, you can plug right into it and have a huge screen. Rest of the time, you will have something that is much lighter and much more portable.
I understand what you are saying but I don’t sit in one place with my laptop.
It moves around the house as I work on things or surf. Living room, kitchen, dining room, upstairs suite, In the winter by the wood stove, in the summer, in the media room.
So I love the big screen. I don’t lug it to all the places in one day or even in a week or two, I just work in different areas over different periods of time.