Cracked firewalls, anti-virus-, -spyware-programs expire?

It seems as if cracked none freeware firewalls, anti-virus-, anti-spyware-programs and similar programs are not sense fully to use, because they generally expire after some short time when updating them / their databases. Is that true?
Best wishes, Biff
Answer #1
Not really, depends on which one you are using, you can use a crack to bypass that but for instance ESET Nod32 and Kaspersky both use keys but there are tons out there so its not that bad
Answer #2
Okay, thanks ,
But it doesn’t seem to be that easy (without installing and trying it) to find out which one / version will expire and which one will not.
Many thanks again. Best wishes, Biff
P.S. I have asked because I have seen so much replies reading that the security program had expired after updating.