Path of least resistance. Chemistry was easy to me and eventually graduate school was posed as just the next thing for me to do. So I did it. And kept doing it because it took more energy to stop than to continue. And then finished and found a job in something very close to my PhD.
I happen to like the work still so it hasn't been negative. And I have time for other things too these days.
Yeee, it's pretty nice so far.