I have a dozen colleagues in my team who frequently travel from their homes in Lancs/Yorks towns such as Ashton, Bolton, Garforth, Pontefract & Ilkley to London.
Nearly all of them would happily travel by WCML or ECML, but don't because they'd first have to travel in a Northern/TPEx sardine-can that may or may not be running (wet leaves, strikes, lack of drivers) to connect to the mainline.
Instead they travel to London by car.
I'm viewed as some sort of masochist for persevering with the trains.
HS2 will have exactly the same problem.