riding 140kms per day unloaded is one thing, but just be aware and start doing loaded rides and you'll see that the extra effort required and much slower average speed will be rather significant.
and you wont believe us until you do it, riding with x lbs of stuff on your bike, and which the gearing may no longer seem "fine", all this can easily show up any fit issues and or fitness issues and knees and whatnot can chime in rather loudly whereas riding unloaded, they were pretty happy.....
and while you're at it, get off my damn lawn! ;-)