When my friends and I started playing around Christmas I think bases lasted longer, but now they are decaying in only 10 days. We have had our bases and everything we crafted and collected decay several times now because we didn’t play for a week.
Every time our bases and all our possessions decay it becomes harder and harder for us to return to the game. There’s less and less of a reason to return when there’s nothing to return to and you have to rebuild everything over and over again.
It’s just not fun having to start from scratch over and over again.
We’ve only played on PvP servers and none of them are anywhere near full to capacity and therefore they really don’t need decay to free up space. It may be different on PvE servers, where bases can’t be raided by players but on PvP servers it would definitely help keep more players coming back if their bases did not disappear so quickly. It’s very difficult for a community to grow in a place where everyone’s homes collapse every 10 days.
Once you have lost your base and all your progress it’s very easy to just walk away from the game.
I think a month would be better. Not everyone can nor wants to play every week or even every 10 days. We all like Conan and would like to continuing playing without all our progress decaying so quickly.
If you’re unsure that extending decay times would work, try it out on a couple of empty servers to see how they do.