Sprint - CDMA, Radio question

[nate_stansell]

I've unlocked my phone and applied a customer ROM (Thanks NRGZ28!) and im loving it.
This is not the first phone ive flashed so im not new at this, but im no expert either...

Ive read a lot of posts about radios and flashing them...
From what i understand falshing the radion allows you to the phone on other carriers.
Is that bascially it?
Are there other benefits to doing this that im missing?

I ask because i like to play and im considering flashing the radio on my phone however i dont care about the ability to use other sim cards so i dont know that there is any reason for me to flash the radio...