Because they're trying to justify the expense to themselves ?
I doubt that they would so enthusiastic if it was only BS. Look at the posts they've done on this subject.
Does it matter if it leans ?
If a car is leaning as much as mine in the above pics then, when changing direction, it is less precise due to the less controlled weight transfer - particularly when rapid consecutive changes of direction are involved this will be a limiting factor to the speed attained (look at the Elk test Mercedes A Class debacle for a classic example of limiting suspension design). So, in a word, "Yes" – it matters to me that it leans.
Are you racing the car competitively ?
I've not actually raced wheel-to-wheel on a circuit, but have participated in timed events and I am driving competitively when I'm on a track like Hockenheim – even in an open session – that's part of the fun for me. I can't beat the 911 turbos, etc. on the straights, so need all the help I can get in the twisty bits!
When I did the International Race Licence course at Hock., they were judging candidates on how quick they were too so, "Yes" – it does matter to me. This sounds really negative and nasty but it does bug me that people feel the need to constantly replace and upgrade things on cars purely for the sake of it. Learn the car to it's limits first then start tweaking
IMO, people who put huge, heavy "impressive" but contra-productive wheels on their cars are the saddos – but if that's what "floats their boat", let them – no real harm done.
OTOH, any half-way enthusiastic driver who's had some track tuition will soon be able to determine the weak points of his driving and also of his car – i.e. "learn the car to its limits" as you said. You're right – learning to be precise, smooth and consistent is one thing – making the car better is quite another. But, if the car is better, then us non-Schumachers can still go faster without reaching the car's (higher) limits – that's only a natural desire, isn't it? And, with more experience, the new limits of the car should be reached. Then it's time to mod again!
I would argue that, for a serious driver, these mods are to achieve a better result, not just "for the sake of it". I'll grant you that this limit is always the car's limit in the driver's hands ) and a competent professional in a stock car may well trounce an amateur in a highly modded version – but we are all blessed with different personal limits and just because we have reached our own limit, that doesn't mean we can't improve the car and still improve our lap times. All part of the fun!As I say, I know from personal experience how frustrating it is when a 911 Turbo or Ferrari tip-toes around the corners at snail's pace only to leave you for dead on the straights – but no doubt they're having fun too in their own way. Everyone can do whatever they want with their car and, if you are serious about pushing yourself and the car, even on a fine car like the VX, upgrading the public road-biassed suspension should be worthwhile. I simply can't believe that all the Lotus and VX owners who've upgraded are kidding themselves.
but:
Boys just want to have fun!
It was a write off. He was back in 2003 with an identical car... but had learned a little more car control by then... 
I prefer to upgrade suspension any day! 
This old chestnut again 
On the road I doubt it'll make much difference.
I was chatting to Sinclaires at Rockingham yesterday and whilst I agree with them that standard kit is good they will be the first to agree that a set of Nitrons (or whatever) will enhance the track behaviour of the car. Oh, and Sinclaires are a buiness like any other, there is little profit in Nitrons for them (lots more on Spax) so they're not exaclty being angelic on their comments. 
)
Anyway a van has just dropped the wheels off, better go and sign for them 
