I haven't owned a droid personally, I used to support them extensively.
I am just reporting the facts, jack.
For one it was camera issues. The camera did not work on the rooted phone.
These comments are utterly ignorant. Root gives you full access to your file system. That's it. Never will you have to resetup your phone because you rooted it. Never will the camera stop working because you rooted it. The person who posted these comments very clearly knows next to nothing about Android(or Linux) and is simply trying to make themselves look like they have a vague clue about something that is clearly far beyond their grasp.
If you don't know why you want to root your phone, then don't do it. Don't, however, believe the likes of the lies spread by the one quoted above. After you root your phone it is possible to screw it up by removing crucial system files, but honestly you have to be a moron to accidentally start deleting your /framework/ or other comparable key component. Rooting will allow you to uninstall the bloatware that you normally can't, it will allow you to deodex your phone(changes the flags on system files that determine which services start on boot, can clear up a considerable amount of resources on slower phones). It will allow you to install custom ROMs which *CAN* cause the types of problems that have been linked to rooting in this thread by the ignorant. Custom ROMs are an entirely different subject.
A very simple reason of why you would root without approaching anything like custom ROMs is Amazon's app market. If you have an AT&T Android device, they block the Amazon app store as it isn't a Google Market app. Other Android devices allow installation of non market apps as an option, AT&T phones do not. If you root your phone, you can get around this and install the Amazon market. This is something a very casual user would certainly want, and is the reason as an anecdotal example why I rooted my wife's phone(she is still content with default Blur, but wanted the Amazon market- the only thing I used root for on her phone was to get the AM installed).