I used to have R232 CBL - and I got that for free.

Around 2002 I was doing a programme manager role for consulting engagements as an employee of a big 5 consultancy. I got about $140,000 per year. The company was charging me out at $7,000 per day (approx. $1,520,000 per year). That works out as less than 10%. Needless to say I rapidly moved from employed to contracting after I worked that one out.

The company has been paying you for years while you picked up the skills. You have worked yourself into a corner where only you can do this job and the company can't use you for anything else. You have made yourself vital and therefore dangerous for the company in this one thing and useless otherwise. By getting someone else up to speed, the company is more secure if you go under a bus or leave, but they are also making it possible for you to work on other things and learn more. If you weren't fighting against your company, you might get somewhere. As it is you are just boxing yourself in. Have some confidence. Train up the new guy so he can take some load off you, if you are as good as you think you will be able to take on new projects and do more and better work for the company and help yourself progress.

No you won't get used to it. You'll be out for work for 12 hours a day minimum. You won't get to do fun technical stuff in the evenings just because you are interested in it. So, you'll get out of date with technology, lose interest in your work and hate your job. You will arrive late once in a while because a journey that long will go wrong at least once a week. Your boss will think you are a slacker because he only remembers the times you come in late and that you try to get away on time each day, so you won't get promotion or get given the important work that needs someone really committed. Then you will spend your spare time trying to find a new job closer to home or a new home closer to your job, but you won't have time to do that either so you will be stuck in a job that's grinding you down with no way out except to stop doing the job. You'll lose contact with your family and friends, stop doing all your interests and have nothing to talk about except work. Finally, you will end up unloved and alone with a job you hate and go to an early grave because all you do is eat fast food, sleep and work. The only reason to take a job with that sort of commute is if you are seriously intending on moving closer to it.