I shot on film in high school. I had a decent job so I could buy enough film and processing that I didn't worry too much about "wasting" shots.
I used various point-and-shoots in the late 90s and early 2000's. I constantly had "battery anxiety". I missed a lot of good shots because I kept the camera powered-off for fear of draining the battery. When I threw caution to the wind and kept the camera on the battery would inevitably die and I'd miss shots. I was constantly thinking about my battery. It sapped a lot of the joy from shooting pictures.
I never worry about that with my Nikon DSLRs. I can grab the camera when I head out in the morning and know I can shoot as much as I want, all day, and never run out of battery. (Realistically a big shooting day for me is only 400-500 shots. Still...)
Given how long my D30, D3100, and now D7200 have lasted I guess I can find some inventory blowout on a couple newer cameras and hoard them away.