WOW, what a loaded question. Do I say pepsi or vodka? hmmm.

Seriously, I use my screwdrivers, and socket set a lot but, then I'm building a lot of pvc stuff. Then I use my new table saw a lot now that I could finally afford one. I used a jigsaw for years and it was driving me nuts. Nothing ever really came out str8 for the long cuts. Now I can't put down my paint brushes and glue gun for my prop building. My mallet doesn't go far either for pounding things into place.
My air compressor is a huge help since a few years ago I went to the pnuematics.

The problem with power tools, if you see one, you will always think of a use for it. lol