This thread made me chuckle. Yes, it is a contentious issue, but IF you read the first post, emery1990 [I hope that is not the year you were born
] clearly states that he is hesitant to spend money on something that may encourage him to go faster round corners.
Well, to me that shows that you are on the right track. You have a brain, and are thinking that perhaps you have limitations ...... well good. If you are in fact 19, your driving experience may not really be up there. I have driven since I was 14, and I am no where near an amazing person behind the wheel. I know my limitations, and stick within them. Occasionally I get a bit excited, and perhaps doing something that a little silly for being on a public road, but not so silly that I it is beyond what i know I can do.
The question then becomes how well do you really know your limits? I would love to be able to throw a car round like a pro, but that's not me. Whether I go round a bend at 30 or 90 is neither here nor there, what is important to me is that me, and my car stay in one piece.
As for your mate, there are LOADS of people like that on the road. Whether that is right or wrong can be debated for ever, but knowing that means that everyone needs to be aware. I have been cut off in dangerous ways more times than I care to imagine, but luckily being alert to the stupidity of others has allowed me to react and stay safe.
I truly hope your mate considers his own ability, I have lost a couple of frineds in accidents, and it is such a senseless end.