My data was hacked. Are credit monitoring services at all worthwhile?

My data was included in the recent Experian/T-Mobile breach. My entire credit application - including SSN - was compromised, apparently.

They're offering two years of free credit monitoring from ProtectMyId as compensation, but I'm curious if that's effective enough to be even worth the hassle (as opposed to checking my own credit quarterly, which I do anyway.)

Does anyone have experience with these services? At this point it's probably safe to say that most people have enough exposed data to pull of many kinds of identity theft. Should this be a standard line of defense, or are there other mitigations?