Open Raise 10BB?

[KipBond]

I´m fairly new to live play -- migrating from the online world after the UIGEA. I like live a lot more -- it´s slower, but more fun and different strategies.

One thing that I´m just realizing is that people open-raise for a LOT more than what is standard online. I´ve seen a few people on here comment that a 10xBB open-raise is pretty standard. WHY?!? This doesn´t make sense to me. How can this be a good strategy?

Normal buy-in is 100BB right? So open-raise for 10% of your stack? And then what if you face a small raise? to 20BB? Or 25BB? You may be getting the right pot-odds to call, but with 1/4 of your stack in pre-flop, you have no wiggle room after the flop to get information or fold.

I can see if you (and everyone else) had 300BB stacks, maybe. But, even then, a 3-4BB raise is standard because you are getting the right price relative to the blinds. 10xBB, probably not.

I´m pretty sure they don´t do this in high-stakes-poker, right? I think a 3.5x BB raise is standard (since it´s a pot-size raise).

So, my question is... WHY?? Why is 10xBB raise standard... and how can it be right/good?