I’m bucking the trend, because I really don’t see a problem.
Joining the motorway is simple - just get your speed up to that of lane 1, indicate and slip into a gap. Always drive in lane 1 except when overtaking.
I’d probably take a break on a 6 hour drive, but anything less, I’d do in one go.
Luckily, my daily driving is varied from country lanes to dual carriage ways, motorways and the City’s central motorway/bypass.
Like Cabbie21 I think an anxious driver can be a danger to themselves and other road users. A friend was told on a driving assessment that her licence was a privilege and entitled her to drive on any road and she ought to be competent enough to do so - blunt, but true.
It is wrong (IMHO) that new drivers are allowed on motorways without any practical tuition and I think after passing the driving test, an hours lesson, given by a professional, should be compulsory.
At only 62, a lot of people are still working and driving high mileages up and down motorways daily - I clocked up 62,000 miles in 3 years, taking the DDs to and from school, plus bring their social taxi!