It's not that we don't "believe in them", it's that it can cause more problems then it's worth. The coils are designed to be a certain length long and when you alter that the results can be less then ideal. It's the same amount of work to cut them as it is to just install new ones that are designed to be 2" shorter. Coils are cheap, but I understand being tight on money. If you are going to cut your coils, you must use a cut off wheel. You do not want heat to build up in the coil that will cause the spring to loose tension. Then getting both sides the same becomes almost impossible. Also, you can cut up to 1/2 a coil with little change in spring rate and that should net around 1" of drop. Never cut more then a 1/4 coil at a time though, you should install them and give them time to settle before cutting more. These are all "rules" I've read about over the years and I plan to follow them because they have come from different sources and pretty much say the same things.
James