If you can't find those few seconds in the span of 30 days, that's fine. Your account will still be here, just marked as inactive. It's not a demerit or any sort of blemish on your account. It simply means your account will have a few restrictions added to it, such as being unable to download files. If you can't afford a few seconds to post, then surely you can't afford a few seconds to download files either.
That said, we have a significant number of users that conveniently have all of the time in the world to download, download, download but somehow can't find the time to make a single post. Our current Inactivity Policy helps to discourage that. We could be dicks and require that one post to be approved by a Moderator, ensuring that users aren't just flooding our off-topic forum with useless shit but we've opted to be more lenient in exchange for a bit more activity. We've seen quite a few users elect to do something productive and put together meaningful posts, so it's an improvement, even if minor.