Could you provide some way to export completed tasks with it's comments/subtasks inside?
Or to export at least something, like not completed tasks.

I'm pretty sure in your solution and believe you're backuping it yourself pretty good, but the issue I'm trying to avoid with this, is fear of you changing your mind at some point and closing your business.

I'm putting all my private work here and would want to keep it with me even if you decide to close down for some reason.

Thanks for attention.
Lot's of people requiring to implement any export at all.
It's not about trying to switch to other solution. I love Doit.im, I just want to be 110% sure about my tasks not going into limbo even in case of some kind of disaster of all your datacenters.