Lil' skater I was very driven from a young age like you. My approach was 3/4 full time uni, full time work in my chosen field, bought my first place and moved out at 20, paid that mortgage and all my HECS up front as I went along (no HECS debt accumulated). That 5.5 years almost killed me.
I knew more than the practical-only uni bashers that I worked with and I knew more than the theory-only academics that I studied with. I had the fusion of both halves of the equation happening. That is the unstoppable combo where you can walk in/out of any job because you have options. I always saw myself as "the practical/hands-on person who also decided to go to uni with the academics".
OK, it sounds like you are not the "average" Uni Student. Certainly someone who knuckles down and applies themselves will be miles ahead of the competition, especially if they have a natural 'bent' towards the subject(s) they are studying, combined with the practial experience.
I think the whole Uni/Non-Uni debate should start with knowing your own strengths and weaknesses. Be honest with yourself and ask yourself the hard questions. If you know that you won't bother studying because you'd rather be going out partying etc, then why bother going to Uni in the first place.
Not all those who go to Uni get well paying jobs. Some never graduate, some do, but never work in the field they studied. Some find work in their field of choice, but only ever receive a mediocre salary. The high paying jobs would normally go to the more driven students, the ones that pass with honours and/or have been working in the field while at Uni, like our friend Recruit2.
As for getting ahead and investing, well, like everything else in life, not everyone is going to do it. Having a large income should make it easier, but that is not always the case. Many on high incomes get caught up with what they percieve to be needs. They need the expensive house in the "right" suburb. They need the private school for the kids. They need the expensive car(s) etc.
Just like Uni, you need to be dedicated to get ahead. Even on a small income, you can grow your asset base into something large so long as you have the drive and the determination to do it. Obvously a large income earner with drive and determination will amass a larger asset base than a low income earner, but that does not mean that a low income earner can not be successful.
I never lived at home with mummy and daddy to make my investments possible like a lot of younger investors do. That's totally lame in my opinion.
This I think is a little subjective. Again, you have done well yourself and have a large income, so maybe you did not need/want a leg up.
I see nothing wrong with staying at home with the family for a few years, so long as you
respect your parents and will live with them under
their rules AND you don't
take advantage of them.
By this I mean that you pay board (yes, I know some parents won't accept it, but you should at least offer). The board should cover the expenses that you incur. Remember, your parents are not getting any younger and they may/may not be trying to save for their retirement. If they won't accept board from you, maybe you should buy the groceries sometimes or do something else unexpected like that to help them out, maybe take responsibity for the electricity for example.
You should possibly do your own washing/ironing. If your mother tells you she is happy doing everything for you, I am sure that she would be very surprised and happy to see you maturing enough to take responisbility for yourself now you are older. You could explain to her, that as an adult, you should now be learning how to do it, so you can stand on your own two feet once you move out.
Clean up after yourself. Your mother is not your maid.
Be polite and reasonable when your parents/siblings speak to you. Don't behave like a spoilt brat. Remember, you are supposed to be an adult now, so act like one.
I agree with Recruit2 in that it is lame for an adult child to still be living with the parents if you treat your parents as your unpaid servants, you take advantage of their good will, you are rude and unruly, you are on a larger income than them, but they still support you financially.
I am not saying that the young investors here do any of those things, however I have seen several youngsters do/act exactly in that manner.