I do, and it IS powerful, but lots of the things that it's really good at in a finance context I tend to solve with SQL. But that's because I am -- or used to be -- a programmer.

If you've never programmed, "just use SQL" is super daunting. OTOH, Excel gives you access to that kind of data query power without writing code, and the people who are good at it can do pretty amazing things with it. It's a different way of solving that problem.

It's a powerful tool, and it's a well-built one (again, it pains me to say, bc I grew up hating MSFT). If you're on a platform that has access to a native app, exploring it can actually be fun.