No mods, haven't tried co-op yet, 700+ hours and i've never even killed Moder. I am, however, going to do this now since apparently it unlocked another table type. Honestly, i just like hording things. Hell, not too long ago i made my very first real base. I used make huts with wall tiers of chests.

I also have 4 chests-worth of silver that i just mined and ferried back to home base. In the midst of smelting it now.