And you were suggesting it's impossible to earn good money in IT so there's no point.
Not impossible but very hard because of the huge number of people looking for a job in the sector. If you don't have experience in IT outside of pc-fix-it (as the OP suggests) you'll be competing with literally droves of people in the same position and new graduates.
Being a doctor requires huge ability and huge amounts of study, put the same effort and ability into IT and you'll be earning the same money
This is the trade off i pointed out in my original post. Just passing gets you into a very good position, guaranteed. To be offered a place earning 80k+ in IT requires decent experience; people working as a pc-fix-it-man simply dont have that experience and wont get it in that position. To suggest you can just "put in effort" and suddenly get such a reward without a unique idea or any decent experience for someone to even consider looking at you is simply ludacris.
Most people aren't smart enough to be doctors though and most people in IT aren't going to earn that kind of money.
Oh please. For a start there was a recent study showing the average IQ of GPs is in line with the national average, so no it doesn't require any special intelligence. It's clearly significantly more difficult but that's largely a reflection of the poor state of CS courses. Working in the sector i'm sure you've met more than your fair share of people who should never have passed.
But you're original statement was just plain wrong, if you have talent and put in the effort there is nothing to stop you making silly amounts of money in IT, which is equally true of any field. You don't need to be starting the next google to be successful.
You start out in the same position you were in before you trained - square one, minimum wage or barely above. I worked for a bank as an independant IT consultant 5 years ago; It is not anywhere near as easy to get into such a position these days, CS graduates are the new "actors" 10 a penny. By contrast get a degree in the hard sciences and you can pick almost any career you want, careers flock to you, not jobs, careers. I know this from experience.
When you say "silly amounts of money" I'm thinking in the upper 6 digits (to compete with other professions at high level). In that situation you need a runaway success - yep like facebook or google. Maybe you consider something else "silly amounts of money". Unfortunately in the real world not everyone gets to be a CEO of a runaway success.
If you want to just drop into a good position IT is a bad choice (other professions will get you there faster, with better prospects). More recently IT has become a bad choice for people without pre-existing experience because the sector is flooded with graduates (by contrast medicine, science, banking(which you can get into through a science or math background) are *dying* for new blood - as are
many other sectors). The classical routes are still the best.
The OP does not sound like someone already working in a good position so does not have the kind of experience required to get a 80k+/year job in IT. How do you propose he attain this? Clearly his options are:
Looking for something with better prospects to work his way up or
Starting his own business.
The former can take a lot longer than retraining (where you drop into a better position immediately) and has zero guarantee of working and the latter is a huge gamble, especially in a recession.