Should You Shoot At 24 FPS or 60 FPS

I use to always just shoot everything at 60fps in case I wanted to slow it down. That was a mistake Let me know if you have questions Thanks everyone dannygevirtz MY GEAR Camera, , Canon C200 + 1DXmkII + Lens, , Sigma Art 2470mm f, 2. 8 Lights, , Aputure 120Dii + 4ft Quasars + Light Soft Box, , Aputure Light Dome ii Filters, , Tiffen Black ProMist 1, 8