I finally sucked it up...
* NERD ALERT *
I went to Best Buy and bought a 1TB external hard drive today. I’m currently using Time Machine to back up my ENTIRE MacBook for the first time in almost two and a half years.
I have 52GB of photos, but that doesn’t seem like much? I think my whole computer has only 115GB of stuff on it. If that’s right then this 1TB should last me for days!