Samsung Fascinate :: Any Root Method?

I know, there are lots who are against one click roots. that said, I'm not fully sure I know why, and before I use ANY root method- I must be the slowest person on earth, I have been thinking about and considering and backing off from rooting for what seems like ages- I want to know everything I can about it. so, does the program work for the fascinate? is there a good reason NOT to try it? also- how hard is it (with any root method) to take the phone back to stock? yes, I know there is info on how to do this- I am not looking for detailed instructions- more like, opinions. how easy is it, did someone get hung up on any particular part of these processes, etc. honestly, I have the root files on my computer already for normal root- but keep chickening out. on the one hand, I hate the thought of voiding warranty on purpose- on the other hand, in all the years I have had phones and computers and other electronics, I have only ONCE had to use warranty, and then they said it was void anyway because they did not believe that the problem was due to a manufacturing problem(which it was) and I STILL had to pay for the repair. that all said, I get closer each day to rooting but I continue researching the subject (including the after rooting what to do stuff)