I use Windows so my computer already crashes once a day.

My windows machine never crashes (despite what the criminally false apple advertisements would like you to believe). In the 90s windows crashed a lot, and apples crashed even more. Now windows almost never crash and macs crash from time to time.

If I install a program that can deliberately crash my computer, and I run that once per day before I do anything else important on my computer, does that make it crash-proof?

If I have a computer that is in a state that *guaranteed* not to crash no matter what I do to it, that opens up a lot of interesting possibilities.

@derksenmobile No. >:( Your computer crashes once per day IN ADDITION to any other crashes that might happen non-magically.

Can I choose which computer? I could have some old junky one sit around just for my daily crash quota.

You are always using the computer at the time of the crash. If you use one computer 40% of the day and another 59% and another 1% of the day, then the chance of them crashing are 40%, 59%, and 1%, respectively.

Perhaps you are wrong about your computer not crashing daily?