Forgot to comment on this statement.

Stock struts have a longer rod than the aftermarket struts designed for lowering and performance.

What this means is that you can ride on them for a while but depending on a combination of how you drive, the roads you drive on, and the amount of lowering you go with they will blow out.

Its not a matter of "my car rides fine with stock struts" its a matter of when they are going to blow...not if they are going to blow out.

Dampening suffers when using stock struts with owering springs and because the rod sits lower in the strut it is constantly under heavier pressure than with the stock ride height springs. This means it is constantly trying to rebound from a dampened position which causes fatigue on the sidewall of the strut eventually leading to failure or as it is referred to commonly "blow out".

It may take a year or it may take a week...hell it may happen the same day...but its going to happen regardless of what you want to believe.

Another thing that happens is because of this constant pressure, every time you hit a bump your car is going to bounce...commonly called "ricer ride" which causes you to lose control and full tire contact in corners which causes you car to perform worse in corners than it did with the stock setup.

Argue it how you wish but I have been lowering cars since I was 15 and I have done it every way imaginable both correct and incorrect. I think 15 or so years of playing with it has shown me a few things.