Thanks. I read all that stuff and I'm still afraid.
If I were feeling that way about rooting my device (and I have felt that way), I'd not root my device anymore than if I felt afraid to do anything else that was not really necessary; the root exploits for these things are about choice about customizations that the manufacturers and carriers don't want users messing with.
They get more revenue by including the apps and widgets that most rooters remove as "bloatware." They also spend a lot of resources, time and money on support from users who rendered their devices unusable in rooting and modification attempts, thus the company's ongoing efforts to prevent root exploits via OTA updates, etc.
Modern Android devices are fast, reliable and user friendly (once the user gets to know the menus and finds the user manual (most often a pdf file somewhere in the internet). They now have huge, fast processors and a lot of internal memory, etc.
Rooters want to do a whole list of things that are seen by them as necessary and by others as not necessary. So, the choice is there and if being afraid is holding you back, well, just wait and read around; educate yourself.
Read the issues and "bricked" device threads that populate all device root sub-forums. Some overcome all that and go ahead with it; I did with my Eris, my Fascinate, my Droid 3, my first Galaxy 7" Tab.. and
always went back to stock after finding very little difference detected in performance (although it was fun manipulating the CPU speed, etc for a while).
Take your time to learn about it.. use your device stock for a while. Make sure that whatever issues/bugs you detect are not merely user error, configuration conflicts between apps and widgets vying for resources, etc. Jumping to root to resolve that stuff will prove futile and make no difference at all.. it's all about learning how to use the stock device then deciding if you want to root for whatever reasons.