Yes, If you need those.
On my first shop in the times of PS1.5 I started with ASM, and recently I switched if off.
We're waiting for @datakick's work on the area and the stock inventory module. This will make it complete stock solution.
Currently it lacks vital aspects and there are some bugs and quirks (as creating 2 or more orders visible to the customer if the items in one's cart come from different warehouses. This is a feature not a bug. Me and my clients are not enjoying it).