I've been using GoogleVoice off and on for years, but have started using it more, and using it as my "main" number now. In the past, I've had more than a handful of GoogleVoice numbers, and at one point lost one as a result of not using it, and not checking the email account it was tied to for awhile; wasn't a big deal, and in fact, it was a good thing, since it led to my awareness that like email accounts, it's possible for them to be lost.
What are reasons that a GoogleVoice number might be lost, and per reason, what if any actions should be taken to avoid them? For examples, might include, but are not limited to: unintentional-abuse, account-hacked, use-based-termination, reuse-of-"real", etc.
Ask the question in part, because while I have a pretty good idea of how a similar question about Gmail might be answered, I have no idea what I should expect from GoogleVoice.