You lose nothing you have now by ignoring this bonus mechanism. I honestly thought it was a joke when I saw the first post with the "bravery" bonus.
To reiterate: you lose nothing continuing as you already are. You can't lose a bonus you never had. If you want that bonus at your leisure then you'll resubscribe. For you and everyone else speculating about Turbine's business...yes, you'd have to wager, we can see no actual revenue numbers, so speculating what is "best" for Turbine is no wiser than spitting into the wind. What you (and everyone else positing what is best for Turbine's business) are really saying is what you want best for you.