> Excel is super powerful, but I loathe that power. It leads to people doing a ton of amazing, great work in Excel that's super impressive... that no on else can replicate.

More than "replicate", I think the problem is no one else -- and, with enough time and complexity, not even the originator -- can maintain it, which results in Excel often being a vehicle for low-initiation-cost and rapidly-rising-maintenance-cost tools (which, in effect, often end up as straightjackets as no one wants to bear the cost of starting over, or the cost of updating, so business processes end up getting constrained by the tool rather than the tool adapting to processes.)