Just curious...how many "root" their phones?

I am an admitted geek - and almost from the first month I got my first android (HTC Eris) I rooted it. I like rooting to get rid of the bloatware that the vendors decide you just have to have. I like having a new ROM when they are available for the phone, not when the carrier decides to release it. Of course, that means you don't experience the native overlay that Samsung, Moto, LG or HTC have built on top of android.
Rooting now is not quite a hard as it was 4 or 5 years ago. Several developers have "one-touch" root apps that pretty much do the entire thing for you - like Towel Root.

When you root, you want to have a custom recovery to make it easiest to flash your phone - like TWRP. Then you can pretty much download any custom ROM built for your phone to your internal or SD memory. You boot into recovery, make a backup of your current system, then wipe and flash the new ROM. Sometimes it might take a little while for the first boot up - but once you're back running, it's like having a brand new phone.
Do a little research on the main Android modding forums - XDA is my go-to. if you have questions - make sure you search the forum before you ask it - they hate when you ask them a question that was easily searched.
I've never had an issue with my SIM card or a full brick of my phone. I have been stuck in a boot loop when the new ROM just won't take, but you power down & boot back into recovery, restore your backup or plug it into your computer and add another ROM to try.

I have not rooted the S6 I got this week (yet) So far I've found I can remove or disable some of the apps I don't want or need. I'm sure at some point I'll decide that I needed more than 32G (but didn't want to spend the $$ for 64 or higher) and I'll root it to maximize the memory.

Hope that helps - good luck & I'll try to answer any questions you have!

 

I never root my phones. Just never has the desire to do so.

 

For more and more phone users ,they want to update or install any new applications ,so they use the common tool to rooting phone device every time, but they have shoul encountered the same issues,like some phone application sotp to working or get the messages "failed to root ,device not supported"me too, then i see ,it never granted root access, what i need is a professional tool to rool Samsung,above all,the rooing tool can't harm any phone app,

 

I agree with you , if i were the users ,i would spend some money to buy a professinoal software to root Samaung,waht the ipmortant things is it can promised to protected the phone device from harm after rooting,