Foyt20: Thanks for your reply. I think your advice is good that I should not jump into this without understanding it better. These back and forth arguments about the implications of unlocking (security, etc.) show that some very smart people disagree what the implications are. So who am I to make a good decision about this if some experienced folks disagree?
I think the argument that "there is no reason not to root" is pretty well countered by this whole concept. Sure, if you understand how this all works and the implications, I guess rooting is a good idea. But if you learn and understand these things a bit more slowly like I do, you probably shouldn't root just yet.
Learning a little bit more each day though.
I tried posting something similar to this a few minutes ago, but it never showed up.